R. Tkach, "Scaling optical communications for the next decade and beyond," Bell Labs Tech. J. 14, 3-9 (2010).

I. Djordjevic, "Ultimate information capacity of fiber optic networks," SPIE Photon. West , 7619-7621 (2010).

T. Freckmann, R.-J. Essiambre, P. J. Winzer, G. J. Foschini, G. Kramer, "Fiber capacity limits with optimized ring constellations," IEEE Photon. Technol. Lett. 21, 1496-1498 (2009).

R.-J. Essiambre, G. J. Foschini, G. Kramer, P. J. Winzer, "Capacity limits of information transport in fiber-optic networks," Phys. Rev. Lett. 101, (2008) Paper 163901.

R.-J. Essiambre, G. Kramer, G. J. Foschini, P. J. Winzer, "High spectral efficiency modulation for high capacity transmission," Proc. IEEE/LEOS Summer Top. Meet. 113-114 (2008).

M. Ivkovic, I. Djordjevic, B. Vasic, "Calculation of achievable information rates of long-haul optical
transmission systems using instanton approach," J. Lightw. Technol. 25, 1163-1168 (2007).

D. O. Caplan, "Laser communication transmitter and receiver design," J. Opt. Fiber Commun. Res. 4, 225-362 (2007).

P. J. Winzer, R. J. Essiambre, "Advanced optical modulation formats," Proc. IEEE 94, 952-985 (2006).

M. H. Taghavi, G. C. Papen, P. H. Siegel, "On the multiuser capacity of WDM in a nonlinear optical fiber: Coherent
communication," IEEE Trans. Inf. Theory 52, 5008-5022 (2006).

R.-J. Essiambre, P. J. Winzer, X. Q. Wang, W. Lee, C. A. White, E. C. Burrows, "Electronic predistortion and fiber nonlinearity," IEEE Photon. Technol. Lett. 18, 1804-1806 (2006).

P. J. Winzer, G. Raybon, C. R. Doerr, M. Duelk, C. Dorrer, "107-Gb/s optical signal generation using electronic time-division
multiplexing," J. Lightw. Technol. 24, 3107-3113 (2006).

T. Mizuochi, "Recent progress in forward error correction and its interplay with
transmission impairments," IEEE J. Sel. Topics Quantum Electron. 12, 544-554 (2006).

E. E. B. Basch, R. Egorov, S. Gringeri, S. Elby, "Architectural tradeoffs for reconfigurable dense wavelength-division
multiplexing systems," IEEE J. Select. Topics Quantum Electron. 12, 615-626 (2006).

T. J. Ellingham, J. D. Ania-Castanón, R. Ibbotson, X. Chen, L. Zhang, S. K. Turitsyn, "Quasi-lossless optical links for broadband transmission and data processing," IEEE Photon. Technol. Lett. 18, 268-270 (2006).

L. Grüner-Nielsen, M. Wandel, P. Kristensen, C. Jørgensen, L. Jørgensen, B. Edvold, B. Pálsdóttir, D. Jakobsen, "Dispersion-compensating fibers," J. Lightw. Technol. 23, 3566-3579 (2005).

M. Nishimura, "Optical fibers and fiber dispersion compensators for high-speed optical
communication," J. Opt. Fiber Commun. Rep. 2, 115-139 (2005).

P. J. Winzer, M. Pfennigbauer, R.-J. Essiambre, "Coherent crosstalk in ultradense WDM systems," J. Lightw. Technol. 23, 1734-1744 (2005).

A. H. Gnauck, P. J. Winzer, "Optical phase-shift-keyed transmission," J. Lightw. Technol. 23, 115-130 (2005).

I. Djordjevic, B. Vasic, M. Ivkovic, I. Gabitov, "Achievable information rates for high-speed long-haul optical transmission," J. Lightw. Technol. 23, 3755-3763 (2005).

L. G. L. Wegener, M. L. Povinelli, A. G. Green, P. P. Mitra, J. B. Stark, P. B. Littlewood, "The effect of propagation nonlinearities on the information capacity of WDM
optical fiber systems: Cross-phase modulation and four-wave mixing," Physica D 189, 81-99 (2004).

J. Bromage, "Raman amplification for fiber communications systems," J. Lightw. Technol. 22, 79-93 (2004).

D. F. Grosz, A. Agarwal, S. Banerjee, D. N. Maywar, A. P. Küng, "All-Raman ultralong-haul single-wideband DWDM transmission systems with
OADM capability," J. Lightw. Technol. 22, 423-432 (2004).

L. K. Wickham, R.-J. Essiambre, A. H. Gnauck, P. J. Winzer, A. R. Chraplyvy, "Bit pattern length dependence of intrachannel nonlinearities in
pseudolinear transmission," IEEE Photon. Technol. Lett. 16, 1591-1593 (2004).

S. Radic, N. Vukovic, S. Chandrasekhar, A. Velingker, A. Srivastava, "Forward error correction performance in the presence of rayleigh-dominated
transmission noise," IEEE Photon. Technol. Lett. 15, 326-328 (2003).

J. Ko, S. Kim, J. Lee, S. Won, Y. Kim, J. Jeong, "Estimation of performance degradation of bidirectional WDM transmission
systems due to Rayleigh backscattering and ASE noises using numerical and analytical models," J. Lightw. Technol. 21, 938-946 (2003).

J.-C. Bouteiller, K. Brar, J. Bromage, S. Radic, C. Headley, "Dual-order Raman pump," IEEE Photon. Technol. Lett. 15, 212-214 (2003).

P. J. Winzer, S. Chandrasekhar, H. Kim, "Impact of filtering on RZ-DPSK reception," IEEE Photon. Technol. Lett. 15, 840-842 (2003).

K. S. Turitsyn, S. A. Derevyanko, I. V. Yurkevich, S. K. Turitsyn, "Information capacity of optical fiber channels with zero average dispersion," Phys. Rev. Lett. 91, (2003) Paper 203901.

G. Kramer, A. Ashikhmin, A. J. van Wijngaarden, X. Wei, "Spectral efficiency of coded phase-shift keying for fiber-optic
communication," J. Lightw. Technol. 21, 2438-2445 (2003).

E. Desurvire, "A quantum model for optically amplified nonlinear transmission systems," Opt. Fiber Technol. 8, 210-230 (2002).

S. Verdú, "Spectral efficiency in the wideband regime," IEEE Trans. Inf. Theory 48, 1319-1343 (2002).

E. Narimanov, P. P. Mitra, "The channel capacity of a fiber optics communication system: Perturbation
theory," J. Lightw. Technol. 20, 530-537 (2002).

J. Tang, "The channel capacity of a multispan DWDM system employing dispersive
nonlinear optical fibers and an ideal coherent optical receiver," J. Lightw. Technol. 20, 1095-1101 (2002).

V. E. Perlin, H. G. Winful, "Optimizing the noise performance of broadband WDM systems with distributed
Raman amplification," IEEE Photon. Technol. Lett. 14, 1199-1201 (2002).

S. Radic, S. Chandrasekhar, "Limitations in dense bidirectional transmission in absence of optical
amplification," IEEE Photon. Technol. Lett. 14, 95-97 (2002).

S. Radic, S. Chandrasekhar, P. Bernasconi, J. Centanni, C. Abraham, N. Copner, K. Tan, "Feasibility of hybrid Raman/EDFA amplification in bidirectional optical
transmission," IEEE Photon. Technol. Lett. 14, 221-223 (2002).

R.-J. Essiambre, P. J. Winzer, J. Bromage, C. H. Kim, "Design of bidirectionally pumped fiber amplifiers generating double
Rayleigh backscattering," IEEE Photon. Technol. Lett. 14, 914-916 (2002).

A. Mecozzi, C. B. Clausen, M. Shtaif, S.-G. Park, A. H. Gnauck, "Cancellation of timing and amplitude jitter in symmetric links using highly
dispersed pulses," IEEE Photon. Technol. Lett. 13, 445-447 (2001).

P. J. Winzer, "Performance estimation of receivers corrupted by optical noise," Proc. Opt. Amplifiers Appl. 60, 268-273 (2001).

J. Tang, "The Shannon channel capacity of dispersion-free nonlinear optical fiber
transmission," J. Lightw. Technol. 19, 1104-1109 (2001).

P. P. Mitra, J. B. Stark, "Nonlinear limits to the information capacity of optical fibre
communications," Nature 411, 1027-1030 (2001).

G. Bellotti, S. Bigo, "Cross-phase modulation suppressor for multispan dispersion-managed WDM
transmissions," IEEE Photon. Technol. Lett. 12, 726-728 (2000).

G. Bellotti, S. Bigo, S. Gauchard, P. Cortes, S. LaRochelle, "10$\,\times\,$10 gb/s cross-phase modulation suppressor using WDM narrowband fiber Bragg
gratings," IEEE Photon. Technol. Lett. 12, 1403-1405 (2000).

L. Grüner-Nielsen, S. Knudsen, B. Edvold, T. Veng, D. Magnussen, C. Larsen, H. Damsgaard, "Dispersion compensating fibers," Opt. Fiber Technol. 6, 164-180 (2000).

S. A. E. Lewis, S. V. Chernikov, J. R. Taylor, "Characterization of double Rayleigh scatter noise in Raman amplifiers," IEEE Photon. Technol. Lett. 12, 528-530 (2000).

M. Nissov, K. Rottwitt, H. Kidorf, M. Ma, "Rayleigh crosstalk in long cascades of distributed unsaturated Raman
amplifiers," IEE Electron. Lett. 35, 997-998 (1999).

P. J. Winzer, A. Kalmar, "Sensitivity enhancement of optical receivers by impulsive coding," J. Lightw. Technol. 17, 171-177 (1999).

R. H. Walden, "Performance trends for analog to digital converters," IEEE Commun. Mag. 37, 96-101 (1999).

R. H. Walden, "Analog-to-digital converter survey and analysis," IEEE J. Sel. Areas Commun. 17, 539-550 (1999).

R.-J. Essiambre, B. Mikkelsen, G. Raybon, "Intra-channel cross-phase modulation and four-wave mixing in high-speed TDM
systems," IEE Electron. Lett. 35, 1576-1578 (1999).

C. Kim, Y. Chung, "2.5 Gb/s$\,\times\,$16-channel bidirectional WDM transmission system using bidirectional erbium-doped
fiber amplifier based on spectrally interleaved synchronized etalon filters," IEEE Photon. Technol. Lett. 11, 745-747 (1999).

P. J. Winzer, "Linking equations between photon statistics and photocurrent statistics for
time-varying stochastic photon rates," Quantum Semiclass. Opt.: J. Eur. Opt. Soc. Part B 10, 643-655 (1998).

A. Sendonaris, V. V. Veeravalli, B. Aazhang, "Joint signaling strategies for approaching the capacity of twisted-pair
channels," IEEE Trans. Commun. 46, 673-685 (1998).

G. D. Forney, Jr.G. Ungerboeck, "Modulation and coding for linear Gaussian channels," IEEE Trans. Inf. Theory 44, 2384-2415 (1998).

H. A. Haus, "The noise figure of optical amplifiers," IEEE Photon. Technol. Lett. 10, 1602-1604 (1998).

M. Zirngibl, "Analytical model of Raman gain effects in massive wavelength division
multiplexed transmission systems," IEE Electron. Lett. 34, 789-790 (1998).

P. B. Hansen, L. Eskildsen, A. J. Stentz, T. A. Strasser, J. Judkins, J. J. DeMarco, R. Pedrazzani, D. J. DiGiovanni, "Rayleigh scattering limitations in distributed Raman pre-amplifiers," 343-345 (1997).

M. Gagnaire, "An overview of broadband access technologies," Proc. IEEE 85, 1958-1972 (1997).

G. J. Foschini, "Layered space-time architecture for wireless communication in a fading
environment when using multi-element antennas," Bell Labs Tech. J. 1, 41-59 (1996).

I. P. Kaminow, C. R. Doerr, C. Dragone, T. Koch, U. Koren, A. A. M. Saleh, A. J. Kirby, C. M. Özveren, B. Schofield, R. E. Thomas, R. A. Bany, D. M. Castagnozzi, V. W. S. Chan, B. R. Hemenway, D. Marquis, S. A. Parikh, M. L. Stevens, E. A. Swanson, S. G. Finn, R. G. Gallager, "A wideband all-optical WDM network," IEEE J. Sel. Areas Commun. 14, 780-799 (1996).

D. Christodoulides, R. Jander, "Evolution of stimulated Raman crosstalk in wavelength division multiplexed
systems," IEEE Photon. Technol. Lett. 8, 1722-1724 (1996).

L. Eskildsen, P. Hansen, P. Koren, B. Miller, M. Young, K. Dreyer, "Stimulated Brillouin scattering suppression with low residual AM using a
novel temperature wavelength-dithered DFB laser diode," IEE Electron. Lett. 32, 1387-1389 (1996).

F. Forghieri, R. W. Tkach, A. R. Chraplyvy, "Effect of modulation statistics on Raman crosstalk in WDM systems," IEEE Photon. Technol. Lett. 7, 101-103 (1995).

M. Van Deventer, A. Boot, "Polarization properties of stimulated Brillouin scattering insingle-mode
fibers," J. Lightw. Technol. 12, 585-590 (1994).

R. Lundin, "Dispersion flattening in a w fiber," Appl. Opt. 33, 1011-1014 (1994).

J. Lee, C. Shim, "Bit-error-rate analysis of optically preamplified receivers using an
eigenfunction expansion method in optical frequency domain," J. Lightw. Technol. 12, 1224-1229 (1994).

A. Mecozzi, "Limits to long-haul coherent transmission set by the Kerr nonlinearity and
noise of the in-line amplifiers," J. Lightw. Technol. 12, 1993-2000 (1994).

T. Li, M. C. Teich, "Photon point process for traveling-wave laser amplifiers," IEEE J. Quantum Electron. 29, 2568-2578 (1993).

P. Diament, M. C. Teich, "Evolution of the statistical properties of photons passed through a
traveling-wave laser amplifier," IEEE J. Quantum Electron. 28, 1325-1334 (1992).

A. Chraplyvy, J. Nagel, R. Tkach, "Equalization in amplified WDM lightwave transmission systems," IEEE Photon. Technol. Lett. 4, 920-922 (1992).

S. Chernikov, P. Mamyshev, "Femtosecond soliton propagation in fibers with slowly decreasing dispersion," J. Opt. Soc. Am. B 8, 1633-1641 (1991).

D. Marcuse, "Single-channel operation in very long nonlinear fibers with optical
amplifiers at zero dispersion," J. Lightw. Technol. 9, 356-361 (1991).

D. Marcuse, A. R. Chraplyvy, R. W. Tkach, "Effect of fiber nonlinearity on long-distance transmission," J. Lightw. Technol. 9, 121-128 (1991).

T. Li, M. Teich, "Bit-error rate for a lightwave communication system incorporating an
erbium-doped fibre amplifier," IEE Electron. Lett. 27, 598-600 (1991).

J. J. Werner, "The HDSL environment," IEEE J. Sel. Areas Commun. 9, 785-800 (1991).

I. Kalet, S. Shamai, "On the capacity of a twisted-wire pair: Gaussian model," IEEE Trans. Commun. 38, 379-383 (1990).

D. Marcuse, "Derivation of analytical expressions for the bit-error probability in
lightwave systems with optical amplifiers," J. Lightw. Technol. 8, 1816-1823 (1990).

A. R. Chraplyvy, "Limitations on lightwave communications imposed by optical-fiber
nonlinearities," J. Lightw. Technol. 8, 1548-1557 (1990).

P. Mamyshev, S. Chernikov, "Ultrashort-pulse propagation in optical fibers," 15, 1076-1078 (1990).

R. Stolen, J. Gordon, W. Tomlinson, H. Haus, "Raman response function of silica-core fibers," J. Opt. Soc. Amer. B 6, 1159-1166 (1989).

K. Blow, D. Wood, "Theoretical description of transient stimulated Raman scattering in optical
fibers," IEEE J. Quantum Electron. 25, 2665-2673 (1989).

W. Jiang, P. Ye, "Crosstalk in fiber Raman amplification for WDM systems," J. Lightw. Technol. 7, 1407-1411 (1989).

N. A. Olsson, "Lightwave systems with optical amplifiers," J. Lightw. Technol. 7, 1071-1082 (1989).

J. Forney, Jr., G. D. , L.-F. Wei, "Multidimensional constellations—Part 1: Introduction, figures of
merit, and generalized cross constellations," IEEE J. Sel. Areas Commun. 7, 877-892 (1989).

B. E. Rimoldi, "A decomposition approach to CPM," IEEE Trans. Inf. Theory 34, 260-270 (1988).

R. Tkach, A. Chraplyvy, R. Derosier, "Spontaneous Brillouin scattering for single-mode optical-fibre
characterisation," IEE Electron. Lett. 22, 1011-1013 (1986).

G. D. Forney, Jr.R. G. Gallager, G. R. Lang, F. M. Longstaff, S. U. Qureshi, "Efficient modulation for band-limited channels," IEEE J. Sel. Areas Commun. SAC-2, 632-647 (1984).

T. Aulin, N. Rydbeck, C. E. Sundberg, "Continuous phase modulation—Part 2: Partial response signaling," IEEE Trans. Commun. COM-29, 210-225 (1981).

T. Aulin, C. E. Sundberg, "Continuous phase modulation—Part 1: Full response signaling," IEEE Trans. Commun. COM-29, 196-209 (1981).

R. Stolen, "Nonlinearity in fiber transmission," Proc. IEEE 68, 1232-1236 (1980).

S. Pasupathy, "Minimum shift keying: A spectrally efficient modulation," IEEE Commun. Mag. 17, 14-22 (1979).

J. Pierce, "Optical channels: Practical limits with photon counting," IEEE Trans. Commun. COM-26, 1819-1821 (1978).

A. Jerri, "The Shannon sampling theorem—Its various extensions and
applications: A tutorial review," Proc. IEEE 65, 1565-1596 (1977).

P. Kabal, S. Pasupathy, "Partial-response signaling," IEEE Trans. Commun. COM-23, 921-934 (1975).

R. Hellwarth, J. Cherlow, T. T. Yang, "Origin and frequency dependence of nonlinear optical susceptibilities of
glasses," Phys. Rev. B 11, 964-967 (1975).

G. F. Foschini, R. D. Gitlin, S. B. Weinstein, "Optimization of two dimensional signal constellations in the presence of
Gaussian noise," IEEE Trans. Commun. 22, 28-38 (1974).

B. W. Kernighan, S. Lin, "Heuristic solution of a signal design optimization problem," Bell Syst. Tech. J. 52, 1145-1159 (1973).

R. H. Stolen, E. P. Ippen, "Raman gain in glass optical waveguides," Appl. Phys. Lett. 22, 276-278 (1973).

N. Bloembergen, "The stimulated Raman effect," Amer. J. Phys. 35, 989-1023 (1967).

A. Lender, "Correlative level coding for binary data transmission," IEEE Spectrum 3, 104-115 (1966).

J. P. Gordon, W. H. Louisell, L. R. Walker, "Quantum fluctuations and noise in parametric processes II," Phys. Rev. 129, 481-485 (1963).

J. P. Gordon, L. R. Walker, W. H. Louisell, "Quantum statistics of masers and attenuators," Phys. Rev. 130, 806-812 (1963).

J. P. Gordon, "Quantum effects in communications systems," Proc. IRE 50, 1898-1908 (1962).

H. J. Landau, W. L. Miranker, "The recovery of distorted bandlimited signals," J. Math Anal. Appl. 2, 97-104 (1961).

H. J. Landau, "On the recovery of a band-limited signal, after instantaneous companding
and subsequent band limiting," Bell Syst. Tech. J. 39, 351-364 (1960).

J. Hancock, R. Lucky, "Performance of combined amplitude and phase-modulated communication systems," Commun. Syst., IRE Trans. 8, 232-237 (1960).

J. Pierce, "Physical sources of noise," Proc. IRE 44, 601-608 (1956).

C. E. Shannon, "A mathematical theory of communication," Bell Syst. Tech. J. 27, 379–423 and 623–656 (1948).

H. Nyquist, "Certain topics of telegraph transmission theory," Trans. Amer. Inst. Electr. Eng. 47, 617-644 (1928).

W. Schottky, "Über spontane Stromschwankungen in verschiedenen
Elektrizitätsleitern," Annalen der Physik 57, 541-567 (1918).

A. Einstein, "On the quantum theory of radiation," Phys. Zeits. 18, 121 (1917).

E. T. Whittaker, "On the functions which are represented by the expansions of the
interpolation theory," Proc. R. Soc. Edinburgh 35, 181-194 (1915).

J. Kerr, "A new relation between electricity and light: Dielectrified media
birefringent," Phil. Mag. 50, 3337 (1875).

M. Bayes, M. Price, "An essay towards solving a problem in the doctrine of chances," Philos. Trans. R. Soc. Lond. 53, 370-418 (1763).

N. Bloembergen, "The stimulated Raman effect," Amer. J. Phys. 35, 989-1023 (1967).

W. Schottky, "Über spontane Stromschwankungen in verschiedenen
Elektrizitätsleitern," Annalen der Physik 57, 541-567 (1918).

E. Ippen, R. Stolen, "Stimulated Brillouin scattering in optical fibers," Appl. Phys. Lett. 21, 539-541 (1972).

R. H. Stolen, E. P. Ippen, "Raman gain in glass optical waveguides," Appl. Phys. Lett. 22, 276-278 (1973).

G. J. Foschini, "Layered space-time architecture for wireless communication in a fading
environment when using multi-element antennas," Bell Labs Tech. J. 1, 41-59 (1996).

R. Tkach, "Scaling optical communications for the next decade and beyond," Bell Labs Tech. J. 14, 3-9 (2010).

C. E. Shannon, "A mathematical theory of communication," Bell Syst. Tech. J. 27, 379–423 and 623–656 (1948).

H. J. Landau, "On the recovery of a band-limited signal, after instantaneous companding
and subsequent band limiting," Bell Syst. Tech. J. 39, 351-364 (1960).

B. W. Kernighan, S. Lin, "Heuristic solution of a signal design optimization problem," Bell Syst. Tech. J. 52, 1145-1159 (1973).

J. Hancock, R. Lucky, "Performance of combined amplitude and phase-modulated communication systems," Commun. Syst., IRE Trans. 8, 232-237 (1960).

M. Nissov, K. Rottwitt, H. Kidorf, M. Ma, "Rayleigh crosstalk in long cascades of distributed unsaturated Raman
amplifiers," IEE Electron. Lett. 35, 997-998 (1999).

R.-J. Essiambre, B. Mikkelsen, G. Raybon, "Intra-channel cross-phase modulation and four-wave mixing in high-speed TDM
systems," IEE Electron. Lett. 35, 1576-1578 (1999).

T. Li, M. Teich, "Bit-error rate for a lightwave communication system incorporating an
erbium-doped fibre amplifier," IEE Electron. Lett. 27, 598-600 (1991).

A. R. Chraplyvy, P. S. Henry, "Performance degradation due to stimulated Raman scattering in
wavelength-division-multiplexed optical-fibre systems," IEE Electron. Lett. 19, 641-642 (1983).

R. Tkach, A. Chraplyvy, R. Derosier, "Spontaneous Brillouin scattering for single-mode optical-fibre
characterisation," IEE Electron. Lett. 22, 1011-1013 (1986).

L. Eskildsen, P. Hansen, P. Koren, B. Miller, M. Young, K. Dreyer, "Stimulated Brillouin scattering suppression with low residual AM using a
novel temperature wavelength-dithered DFB laser diode," IEE Electron. Lett. 32, 1387-1389 (1996).

M. Zirngibl, "Analytical model of Raman gain effects in massive wavelength division
multiplexed transmission systems," IEE Electron. Lett. 34, 789-790 (1998).

S. Pasupathy, "Minimum shift keying: A spectrally efficient modulation," IEEE Commun. Mag. 17, 14-22 (1979).

R. H. Walden, "Performance trends for analog to digital converters," IEEE Commun. Mag. 37, 96-101 (1999).

P. Diament, M. C. Teich, "Evolution of the statistical properties of photons passed through a
traveling-wave laser amplifier," IEEE J. Quantum Electron. 28, 1325-1334 (1992).

T. Li, M. C. Teich, "Photon point process for traveling-wave laser amplifiers," IEEE J. Quantum Electron. 29, 2568-2578 (1993).

K. Blow, D. Wood, "Theoretical description of transient stimulated Raman scattering in optical
fibers," IEEE J. Quantum Electron. 25, 2665-2673 (1989).

G. D. Forney, Jr.R. G. Gallager, G. R. Lang, F. M. Longstaff, S. U. Qureshi, "Efficient modulation for band-limited channels," IEEE J. Sel. Areas Commun. SAC-2, 632-647 (1984).

J. Forney, Jr., G. D. , L.-F. Wei, "Multidimensional constellations—Part 1: Introduction, figures of
merit, and generalized cross constellations," IEEE J. Sel. Areas Commun. 7, 877-892 (1989).

I. P. Kaminow, C. R. Doerr, C. Dragone, T. Koch, U. Koren, A. A. M. Saleh, A. J. Kirby, C. M. Özveren, B. Schofield, R. E. Thomas, R. A. Bany, D. M. Castagnozzi, V. W. S. Chan, B. R. Hemenway, D. Marquis, S. A. Parikh, M. L. Stevens, E. A. Swanson, S. G. Finn, R. G. Gallager, "A wideband all-optical WDM network," IEEE J. Sel. Areas Commun. 14, 780-799 (1996).

R. H. Walden, "Analog-to-digital converter survey and analysis," IEEE J. Sel. Areas Commun. 17, 539-550 (1999).

J. J. Werner, "The HDSL environment," IEEE J. Sel. Areas Commun. 9, 785-800 (1991).

T. Mizuochi, "Recent progress in forward error correction and its interplay with
transmission impairments," IEEE J. Sel. Topics Quantum Electron. 12, 544-554 (2006).

E. E. B. Basch, R. Egorov, S. Gringeri, S. Elby, "Architectural tradeoffs for reconfigurable dense wavelength-division
multiplexing systems," IEEE J. Select. Topics Quantum Electron. 12, 615-626 (2006).

P. J. Winzer, S. Chandrasekhar, H. Kim, "Impact of filtering on RZ-DPSK reception," IEEE Photon. Technol. Lett. 15, 840-842 (2003).

C. Kim, Y. Chung, "2.5 Gb/s$\,\times\,$16-channel bidirectional WDM transmission system using bidirectional erbium-doped
fiber amplifier based on spectrally interleaved synchronized etalon filters," IEEE Photon. Technol. Lett. 11, 745-747 (1999).

S. Radic, S. Chandrasekhar, "Limitations in dense bidirectional transmission in absence of optical
amplification," IEEE Photon. Technol. Lett. 14, 95-97 (2002).

S. Radic, S. Chandrasekhar, P. Bernasconi, J. Centanni, C. Abraham, N. Copner, K. Tan, "Feasibility of hybrid Raman/EDFA amplification in bidirectional optical
transmission," IEEE Photon. Technol. Lett. 14, 221-223 (2002).

S. Radic, N. Vukovic, S. Chandrasekhar, A. Velingker, A. Srivastava, "Forward error correction performance in the presence of rayleigh-dominated
transmission noise," IEEE Photon. Technol. Lett. 15, 326-328 (2003).

R.-J. Essiambre, P. J. Winzer, X. Q. Wang, W. Lee, C. A. White, E. C. Burrows, "Electronic predistortion and fiber nonlinearity," IEEE Photon. Technol. Lett. 18, 1804-1806 (2006).

S. A. E. Lewis, S. V. Chernikov, J. R. Taylor, "Characterization of double Rayleigh scatter noise in Raman amplifiers," IEEE Photon. Technol. Lett. 12, 528-530 (2000).

V. E. Perlin, H. G. Winful, "Optimizing the noise performance of broadband WDM systems with distributed
Raman amplification," IEEE Photon. Technol. Lett. 14, 1199-1201 (2002).

J.-C. Bouteiller, K. Brar, J. Bromage, S. Radic, C. Headley, "Dual-order Raman pump," IEEE Photon. Technol. Lett. 15, 212-214 (2003).

T. J. Ellingham, J. D. Ania-Castanón, R. Ibbotson, X. Chen, L. Zhang, S. K. Turitsyn, "Quasi-lossless optical links for broadband transmission and data processing," IEEE Photon. Technol. Lett. 18, 268-270 (2006).

A. Mecozzi, C. B. Clausen, M. Shtaif, S.-G. Park, A. H. Gnauck, "Cancellation of timing and amplitude jitter in symmetric links using highly
dispersed pulses," IEEE Photon. Technol. Lett. 13, 445-447 (2001).

T. Freckmann, R.-J. Essiambre, P. J. Winzer, G. J. Foschini, G. Kramer, "Fiber capacity limits with optimized ring constellations," IEEE Photon. Technol. Lett. 21, 1496-1498 (2009).

G. Bellotti, S. Bigo, "Cross-phase modulation suppressor for multispan dispersion-managed WDM
transmissions," IEEE Photon. Technol. Lett. 12, 726-728 (2000).

G. Bellotti, S. Bigo, S. Gauchard, P. Cortes, S. LaRochelle, "10$\,\times\,$10 gb/s cross-phase modulation suppressor using WDM narrowband fiber Bragg
gratings," IEEE Photon. Technol. Lett. 12, 1403-1405 (2000).

A. Chraplyvy, J. Nagel, R. Tkach, "Equalization in amplified WDM lightwave transmission systems," IEEE Photon. Technol. Lett. 4, 920-922 (1992).

D. Christodoulides, R. Jander, "Evolution of stimulated Raman crosstalk in wavelength division multiplexed
systems," IEEE Photon. Technol. Lett. 8, 1722-1724 (1996).

F. Forghieri, R. W. Tkach, A. R. Chraplyvy, "Effect of modulation statistics on Raman crosstalk in WDM systems," IEEE Photon. Technol. Lett. 7, 101-103 (1995).

R.-J. Essiambre, P. J. Winzer, J. Bromage, C. H. Kim, "Design of bidirectionally pumped fiber amplifiers generating double
Rayleigh backscattering," IEEE Photon. Technol. Lett. 14, 914-916 (2002).

H. A. Haus, "The noise figure of optical amplifiers," IEEE Photon. Technol. Lett. 10, 1602-1604 (1998).

L. K. Wickham, R.-J. Essiambre, A. H. Gnauck, P. J. Winzer, A. R. Chraplyvy, "Bit pattern length dependence of intrachannel nonlinearities in
pseudolinear transmission," IEEE Photon. Technol. Lett. 16, 1591-1593 (2004).

A. Lender, "Correlative level coding for binary data transmission," IEEE Spectrum 3, 104-115 (1966).

I. Kalet, S. Shamai, "On the capacity of a twisted-wire pair: Gaussian model," IEEE Trans. Commun. 38, 379-383 (1990).

P. Kabal, S. Pasupathy, "Partial-response signaling," IEEE Trans. Commun. COM-23, 921-934 (1975).

T. Aulin, N. Rydbeck, C. E. Sundberg, "Continuous phase modulation—Part 2: Partial response signaling," IEEE Trans. Commun. COM-29, 210-225 (1981).

T. Aulin, C. E. Sundberg, "Continuous phase modulation—Part 1: Full response signaling," IEEE Trans. Commun. COM-29, 196-209 (1981).

A. Sendonaris, V. V. Veeravalli, B. Aazhang, "Joint signaling strategies for approaching the capacity of twisted-pair
channels," IEEE Trans. Commun. 46, 673-685 (1998).

J. Pierce, "Optical channels: Practical limits with photon counting," IEEE Trans. Commun. COM-26, 1819-1821 (1978).

G. F. Foschini, R. D. Gitlin, S. B. Weinstein, "Optimization of two dimensional signal constellations in the presence of
Gaussian noise," IEEE Trans. Commun. 22, 28-38 (1974).

G. D. Forney, Jr.G. Ungerboeck, "Modulation and coding for linear Gaussian channels," IEEE Trans. Inf. Theory 44, 2384-2415 (1998).

B. E. Rimoldi, "A decomposition approach to CPM," IEEE Trans. Inf. Theory 34, 260-270 (1988).

S. Verdú, "Spectral efficiency in the wideband regime," IEEE Trans. Inf. Theory 48, 1319-1343 (2002).

M. H. Taghavi, G. C. Papen, P. H. Siegel, "On the multiuser capacity of WDM in a nonlinear optical fiber: Coherent
communication," IEEE Trans. Inf. Theory 52, 5008-5022 (2006).

J. Tang, "The Shannon channel capacity of dispersion-free nonlinear optical fiber
transmission," J. Lightw. Technol. 19, 1104-1109 (2001).

I. Djordjevic, B. Vasic, M. Ivkovic, I. Gabitov, "Achievable information rates for high-speed long-haul optical transmission," J. Lightw. Technol. 23, 3755-3763 (2005).

M. Ivkovic, I. Djordjevic, B. Vasic, "Calculation of achievable information rates of long-haul optical
transmission systems using instanton approach," J. Lightw. Technol. 25, 1163-1168 (2007).

E. Narimanov, P. P. Mitra, "The channel capacity of a fiber optics communication system: Perturbation
theory," J. Lightw. Technol. 20, 530-537 (2002).

J. Tang, "The channel capacity of a multispan DWDM system employing dispersive
nonlinear optical fibers and an ideal coherent optical receiver," J. Lightw. Technol. 20, 1095-1101 (2002).

G. Kramer, A. Ashikhmin, A. J. van Wijngaarden, X. Wei, "Spectral efficiency of coded phase-shift keying for fiber-optic
communication," J. Lightw. Technol. 21, 2438-2445 (2003).

J. Bromage, "Raman amplification for fiber communications systems," J. Lightw. Technol. 22, 79-93 (2004).

A. Mecozzi, "Limits to long-haul coherent transmission set by the Kerr nonlinearity and
noise of the in-line amplifiers," J. Lightw. Technol. 12, 1993-2000 (1994).

D. Marcuse, "Derivation of analytical expressions for the bit-error probability in
lightwave systems with optical amplifiers," J. Lightw. Technol. 8, 1816-1823 (1990).

J. Lee, C. Shim, "Bit-error-rate analysis of optically preamplified receivers using an
eigenfunction expansion method in optical frequency domain," J. Lightw. Technol. 12, 1224-1229 (1994).

P. J. Winzer, M. Pfennigbauer, R.-J. Essiambre, "Coherent crosstalk in ultradense WDM systems," J. Lightw. Technol. 23, 1734-1744 (2005).

P. J. Winzer, G. Raybon, C. R. Doerr, M. Duelk, C. Dorrer, "107-Gb/s optical signal generation using electronic time-division
multiplexing," J. Lightw. Technol. 24, 3107-3113 (2006).

J. Ko, S. Kim, J. Lee, S. Won, Y. Kim, J. Jeong, "Estimation of performance degradation of bidirectional WDM transmission
systems due to Rayleigh backscattering and ASE noises using numerical and analytical models," J. Lightw. Technol. 21, 938-946 (2003).

A. H. Gnauck, P. J. Winzer, "Optical phase-shift-keyed transmission," J. Lightw. Technol. 23, 115-130 (2005).

D. F. Grosz, A. Agarwal, S. Banerjee, D. N. Maywar, A. P. Küng, "All-Raman ultralong-haul single-wideband DWDM transmission systems with
OADM capability," J. Lightw. Technol. 22, 423-432 (2004).

A. R. Chraplyvy, "Limitations on lightwave communications imposed by optical-fiber
nonlinearities," J. Lightw. Technol. 8, 1548-1557 (1990).

P. J. Winzer, A. Kalmar, "Sensitivity enhancement of optical receivers by impulsive coding," J. Lightw. Technol. 17, 171-177 (1999).

N. A. Olsson, "Lightwave systems with optical amplifiers," J. Lightw. Technol. 7, 1071-1082 (1989).

D. Marcuse, "Single-channel operation in very long nonlinear fibers with optical
amplifiers at zero dispersion," J. Lightw. Technol. 9, 356-361 (1991).

D. Marcuse, A. R. Chraplyvy, R. W. Tkach, "Effect of fiber nonlinearity on long-distance transmission," J. Lightw. Technol. 9, 121-128 (1991).

L. Grüner-Nielsen, M. Wandel, P. Kristensen, C. Jørgensen, L. Jørgensen, B. Edvold, B. Pálsdóttir, D. Jakobsen, "Dispersion-compensating fibers," J. Lightw. Technol. 23, 3566-3579 (2005).

W. Jiang, P. Ye, "Crosstalk in fiber Raman amplification for WDM systems," J. Lightw. Technol. 7, 1407-1411 (1989).

M. Van Deventer, A. Boot, "Polarization properties of stimulated Brillouin scattering insingle-mode
fibers," J. Lightw. Technol. 12, 585-590 (1994).

H. J. Landau, W. L. Miranker, "The recovery of distorted bandlimited signals," J. Math Anal. Appl. 2, 97-104 (1961).

M. Nishimura, "Optical fibers and fiber dispersion compensators for high-speed optical
communication," J. Opt. Fiber Commun. Rep. 2, 115-139 (2005).

D. O. Caplan, "Laser communication transmitter and receiver design," J. Opt. Fiber Commun. Res. 4, 225-362 (2007).

R. Stolen, J. Gordon, W. Tomlinson, H. Haus, "Raman response function of silica-core fibers," J. Opt. Soc. Amer. B 6, 1159-1166 (1989).

P. Mamyshev, S. Chernikov, "Ultrashort-pulse propagation in optical fibers," 15, 1076-1078 (1990).

P. B. Hansen, L. Eskildsen, A. J. Stentz, T. A. Strasser, J. Judkins, J. J. DeMarco, R. Pedrazzani, D. J. DiGiovanni, "Rayleigh scattering limitations in distributed Raman pre-amplifiers," 343-345 (1997).

P. P. Mitra, J. B. Stark, "Nonlinear limits to the information capacity of optical fibre
communications," Nature 411, 1027-1030 (2001).

E. Desurvire, "A quantum model for optically amplified nonlinear transmission systems," Opt. Fiber Technol. 8, 210-230 (2002).

L. Grüner-Nielsen, S. Knudsen, B. Edvold, T. Veng, D. Magnussen, C. Larsen, H. Damsgaard, "Dispersion compensating fibers," Opt. Fiber Technol. 6, 164-180 (2000).

J. Kerr, "A new relation between electricity and light: Dielectrified media
birefringent," Phil. Mag. 50, 3337 (1875).

M. Bayes, M. Price, "An essay towards solving a problem in the doctrine of chances," Philos. Trans. R. Soc. Lond. 53, 370-418 (1763).

J. P. Gordon, W. H. Louisell, L. R. Walker, "Quantum fluctuations and noise in parametric processes II," Phys. Rev. 129, 481-485 (1963).

J. P. Gordon, L. R. Walker, W. H. Louisell, "Quantum statistics of masers and attenuators," Phys. Rev. 130, 806-812 (1963).

R. Hellwarth, J. Cherlow, T. T. Yang, "Origin and frequency dependence of nonlinear optical susceptibilities of
glasses," Phys. Rev. B 11, 964-967 (1975).

R.-J. Essiambre, G. J. Foschini, G. Kramer, P. J. Winzer, "Capacity limits of information transport in fiber-optic networks," Phys. Rev. Lett. 101, (2008) Paper 163901.

K. S. Turitsyn, S. A. Derevyanko, I. V. Yurkevich, S. K. Turitsyn, "Information capacity of optical fiber channels with zero average dispersion," Phys. Rev. Lett. 91, (2003) Paper 203901.

A. Einstein, "On the quantum theory of radiation," Phys. Zeits. 18, 121 (1917).

L. G. L. Wegener, M. L. Povinelli, A. G. Green, P. P. Mitra, J. B. Stark, P. B. Littlewood, "The effect of propagation nonlinearities on the information capacity of WDM
optical fiber systems: Cross-phase modulation and four-wave mixing," Physica D 189, 81-99 (2004).

P. J. Winzer, R. J. Essiambre, "Advanced optical modulation formats," Proc. IEEE 94, 952-985 (2006).

M. Gagnaire, "An overview of broadband access technologies," Proc. IEEE 85, 1958-1972 (1997).

A. Jerri, "The Shannon sampling theorem—Its various extensions and
applications: A tutorial review," Proc. IEEE 65, 1565-1596 (1977).

R. Stolen, "Nonlinearity in fiber transmission," Proc. IEEE 68, 1232-1236 (1980).

R.-J. Essiambre, G. Kramer, G. J. Foschini, P. J. Winzer, "High spectral efficiency modulation for high capacity transmission," Proc. IEEE/LEOS Summer Top. Meet. 113-114 (2008).

J. Pierce, "Physical sources of noise," Proc. IRE 44, 601-608 (1956).

J. P. Gordon, "Quantum effects in communications systems," Proc. IRE 50, 1898-1908 (1962).

P. J. Winzer, "Performance estimation of receivers corrupted by optical noise," Proc. Opt. Amplifiers Appl. 60, 268-273 (2001).

E. T. Whittaker, "On the functions which are represented by the expansions of the
interpolation theory," Proc. R. Soc. Edinburgh 35, 181-194 (1915).

P. J. Winzer, "Linking equations between photon statistics and photocurrent statistics for
time-varying stochastic photon rates," Quantum Semiclass. Opt.: J. Eur. Opt. Soc. Part B 10, 643-655 (1998).

I. Djordjevic, "Ultimate information capacity of fiber optic networks," SPIE Photon. West , 7619-7621 (2010).

H. Nyquist, "Certain topics of telegraph transmission theory," Trans. Amer. Inst. Electr. Eng. 47, 617-644 (1928).

D. Tse, P. Viswanath, Fundamentals of Wireless Communication (Cambridge Univ. Press, 2005).

A. Goldsmith, Wireless Communications (Cambridge Univ. Press, 2005).

A. F. Molisch, Wireless Communications (Wiley, 2005).

The Communications Handbook (CRC Press, 1997).

R. G. Gallager, Information Theory and Reliable Communication (Wiley, 1968).

T. M. Cover, J. A. Thomas, Elements of Information Theory (Wiley, 2006).

D. J. C. MacKay, Information Theory, Inference and Learning Algorithms (Cambridge Univ. Press, 2003).

J. M. Wozencraft, B. Reiffen, Sequential Decoding (MIT Press and Wiley, 1961).

J. Massey, "Channel models for random-access systems," NATO Advances Studies Institutes Series E142 (1988) pp. 391-402.

J. L. Massey, "The how and why of channel coding," Proc. Int. Zurich Semin. (1984) pp. 67-73.

J. B. Anderson, T. Aulin, C. E. Sundberg, Digital Phase Modulation (Plenum, 1986).

J. M. Wozencraft, I. M. Jacobs, Principles of Communication Engineering (Wiley, 1965).

S. Haykin, Communication Systems (Wiley, 2001).

J. G. Proakis, Digital Communications (McGraw-Hill, 2001).

B. Sklar, Digital Communications (Prentice-Hall, 2001).

R. G. Gallager, Principles of Digital Communication (Cambridge Univ. Press, 2008).

A. Lapidoth, A Foundation in Digital Communication (Cambridge Univ. Press, 2009).

J. G. Proakis, D. G. Manolakis, Digital Signal Processing: Principles, Algorithms, and Applications (Macmillan, 2007).

R. G. Lyons, Understanding Digital Signal Processing (Prentice Hall, 2004).

R.-J. Essiambre, G. J. Foschini, P. J. Winzer, G. Kramer, E. C. Burrows, "The capacity of fiber-optic communication systems," Proc. Opt. Fiber Commun. Conf. (2008) pp. OTuE1.

I. Djordjevic, L. Xu, T. Wang, "On the channel capacity of multilevel modulation schemes with coherent
detection," Proc. Asia Commun. Photon. Conf. Exhib. (2009) pp. ThC4.

K.-P. Ho, "Channel capacity of WDM systems using constant-intensity modulation formats," Proc. Opt. Fiber Commun. Conf. (2002) pp. 731-733.

E. Desurvire, "A common quantum noise model for optical amplification and nonlinearity in
WDM transmission," Proc. Eur. Conf. Opt. Commun. (2002) pp. Tu3.1.1.

E. Desurvire, Classical and Quantum Information Theory (Cambridge Univ. Press, 2009).

J. B. Stark, "Fundamental limits of information capacity for optical communications
channels," Proc. Eur. Conf. Opt. Commun. (1999) pp. I-28.

P. J. Winzer, R.-J. Essiambre, Optical Fiber Telecommunications VB (Academic, 2008) pp. 232-304.

F. Gray, Pulse Code Communication U.S. Patent 2 632 058 (1953).

A. Papoulis, S. U. Pillai, Probability, Random Variables and Stochastic Processes (McGraw-Hill, 2002).

J. M. Geist, "Capacity and cutoff rate for dense M-ary PSK constellations," Proc. IEEE Mil. Commun. Conf. Record (1990) pp. 768-770.

J. G. Proakis, M. Salehi, Digital Communications (McGraw-Hill, 2007).

S. Lin, D. J. Costello, Error Control Coding (Prentice-Hall, 2004).

J. Massey, "A generalized formulation of minimum shift keying modulation," Proc. IEEE Int. Conf. Commun. (1980) pp. 26.5.1-26.5.4.

R. H. Walden, "Analog-to-digital converters and associated IC technologies," Proc. IEEE Compound Semicond. Integr. Circuits Symp. (2008) pp. 1-2.

R. M. Gray, Source Coding Theory (Springer-Verlag, 1989).

E. Säckinger, Broadband Circuits for Optical Fiber Communication (Wiley, 2005).

S. Alexander, Optical Communication Receiver Design (Institution of Engineering and Technology, 1997).

H. A. Haus, Electromagnetic Noise and Quantum Optical Measurements (Springer-Verlag, 2000).

B. E. A. Saleh, M. C. Teich, Fundamentals of Photonics (Wiley, 2007).

B. E. A. Saleh, Photoelectron Statistics: With Applications to Spectroscopy and Optical
Communication (Springer-Verlag, 1978).

L. Mandel, E. Wolf, Optical Coherence and Quantum Optics (Cambridge Univ. Press, 1995).

J. R. Barry, D. G. Messerschmitt, E. A. Lee, Digital Communication (Springer-Verlag, 2003).

C. W. Gardiner, Handbook of Stochastic Methods: For Physics, Chemistry and the Natural Science (Springer-Verlag, 2004).

P. C. Becker, N. A. Olsson, J. R. Simpson, Erbium-Doped Fiber Amplifiers, Fundamentals and Technology (Academic, 1999).

A. Bjarklev, Optical Fiber Amplifiers: Design and System Applications (Artech House, 1993).

M. Born, E. Wolf, Principles of Optics: Electromagnetic Theory of Propagation, Interference and
Diffraction of Light (Cambridge Univ. Press, 1999).

C. W. Gardiner, P. Zoller, Quantum Noise: A Handbook of Markovian and Non-Markovian Quantum Stochastic
Methods With Applications to Quantum Optics (Springer-Verlag, 2004).

E. Desurvire, D. Bayart, B. Desthieux, S. Bigo, Erbium-Doped Fiber Amplifiers and Device and System Developments (Wiley, 2002).

V. E. Perlin, H. G. Winful, "On trade-off between noise and nonlinearity in WDM systems with distributed
Raman amplification," Proc. Opt. Fiber Commun. Conf. (OFC) (2002) pp. 178-180.

L. F. Mollenauer, J. P. Gordon, Solitons in Optical Fibers: Fundamentals and Applications (Academic, 2006).

R. Boyd, Nonlinear Optics (Academic, 2008).

J. Bromage, P. J. Winzer, R.-J. Essiambre, Raman Amplifiers and Oscillators in Telecommunications (Springer-Verlag, 2003).

G. P. Agrawal, Lightwave Technology: Components and Devices (Wiley, 2004).

Optical-Fiber Transmission (Sams Technical Publishing, 1986).

Optical Fiber Telecommunications II (Academic, 1988).

Y. Akasaka, R. Sugizaki, A. Umeda, T. Kamiya, F. Ltd, J. Chiba, "High-dispersion-compensation ability and low nonlinearity of w-shaped DCF," Proc. Opt. Fiber Commun. Conf. (1996) pp. 201-202.

A. Vengsarkar, "Dispersion compensating fibers," Proc. Opt. Fiber Commun. Conf. (1997) pp. 233-234.

R.-J. Essiambre, G. J. Foschini, P. J. Winzer, G. Kramer, "Capacity limits of fiber-optic communication systems," Proc. Opt. Fiber Commun. Conf. (2009).

H. Haunstein, M. Mayrock, "OFDM spectral efficiency limits from fiber and system non-linearities," Proc. Opt. Fiber Commun. Conf. (2010).

O. A. Sab, V. Lemaire, "Block turbo code performances for longhaul DWDM optical transmission
systems," Proc. Opt. Fiber Commun. Conf. (2000) pp. 280-282.

R.-J. Essiambre, G. J. Foschini, P. J. Winzer, G. Kramer, "Exploring capacity limits of fibre-optic communication systems," Proc. Eur. Conf. Opt. Commun. (2008).

T. Mizuochi, "Next generation FEC for optical communication," Proc. Opt. Fiber Commun. Conf. (2008).

T. Itoi, K. Fukuchi, T. Kasamatsu, "Enabling technologies for 10 Tb/s transmission capacity and beyond," Proc. Eur. Conf. Opt. Commun. (2001) pp. 598-601.

F. Boubal, E. Brandon, L. Buet, S. Chernikov, V. Havard, A. Heerdt, C. , Hugbart, W. Idler, L. Labrunie, P. Le Roux, S. A. E. Lewis, A. Pham, L. Piriou, R. Uhel, J.-P. Blondel, "Wideband and ultra-dense WDM transmission technologies toward over 10-Tb/s
capacity," Proc. Eur. Conf. Opt. Commun. (2001) pp. 58-59.

K. Fukuchi, "Wideband and ultra-dense WDM transmission technologies toward over 10-Tb/s
capacity," Proc. Opt. Fiber Commun. Conf. (OFC) (2002) pp. 558-559.

Optical Fiber Telecommunications V ${\rm A}+{\rm B}$ (Academic, 2008).

R.-J. Essiambre, P. J. Winzer, "Fibre nonlinearities in electronicaly pre-distorted transmission," Proc. European Conf. Opt. Commun. (2005).

P. J. Winzer, "Modulation and multiplexing in optical communication systems," LEOS Newsletter (2009) http://www.ieee.org/organizations/pubs/newsletters/leos/feb09/index.html.

R.-J. Essiambre, G. Raybon, B. Mikkelsen, Optical Fiber Telecommunications IV (Academic, 2002) pp. 232-304.

M. van Deventer, Fundamentals of Bidirectional Transmission Over a Single Optical Fibre (Kluwer, 1996).

R. Ramaswami, K. Sivarajan, Optical Networks: A Practical Perspective (Morgan Kaufmann, 2001).

B. Mukherjee, Optical WDM Networks (Springer-Verlag, 2006).

J. Simmons, Optical Network Design and Planning (Springer-Verlag, 2008).

X. Liu, S. Chandrasekhar, A. Leven, Optical Fiber Telecommunications VB (Academic, 2008) pp. 131-178.

P. J. Winzer, Wiley Encyclopedia of Telecommunications (Wiley, 2002) pp. 1824-1840.

G. Einarsson, Principles of Lightwave Communications (Wiley, 1996).

P. Henry, "Error-rate performance of optical amplifiers," Proc. Opt. Fiber Commun. Conf. (1989).

Raman Amplifiers for Telecommunications 1: Physical Principles (Springer-Verlag, 2004).

C. Headley, G. P. Agrawal, Raman Amplification in Fiber Optical Communication Systems (Academic, 2005).

G. P. Agrawal, Lightwave Technology: Telecommunication Systems (Wiley, 2005).

R. H. Stolen, Optical Fiber Telecommunications (Academic, 1979) pp. 125-150.

P. Nouchi, L. de Montmorillon, P. Sillard, A. Bertaina, "Advance in long-haul fibers," Proc. Opt. Fiber Commun. Conf. (OFC) (2003) pp. 154-155.

G. P. Agrawal, Nonlinear Fiber Optics (Elsevier, 2006).

S. Haykin, Adaptive Filter Theory (Prentice-hall, 2002).

A. Sayed, Fundamentals of Adaptive Filtering (Wiley, 2003).

S. Bigo, "Modelling of WDM terrestrial and submarine links for the design of WDM
networks," Proc. Opt. Fiber Commun. Conf. (2006).

M. Eiselt, "Does spectrally periodic dispersion compensation reduce non-linear effects?," Proc. European Conf. Opt. Commun. (1999) pp. 144-145.

C. Xie, "Suppression of inter-channel nonlinearities in WDM coherent PDM-QPSK
systems using periodic-group-delay dispersion compensators," Proc. Eur. Conf. Opt. Commun. (ECOC) (2009) pp. Paper P4.08.

J. Yu, X. Zhou, M.-F. Huang, Y. Shao, D. Qian, T. Wang, M. Cvijetic, P. Magill, L. Nelson, M. Birk, S. Ten, H. B. Matthew, S. K. Mishra, "17 Tb/s (161 114 Gb/s) PolMux-RZ-8PSK transmission over 662 km of ultra-low
loss fiber using C-band EDFA amplification and digital coherent detection," Proc. Eur. Conf. Opt. Commun. (ECOC) (2008).

H. Takahashi, A. A. Amin, S. L. Jansen, I. Morita, H. Tanaka, "8$\,\times\,$66.8-Gbit/s coherent PDM-OFDM transmission over 640 km of SSMF at 5.6-bit/s/Hz
spectral efficiency," Proc. Eur. Conf. Opt. Commun. (ECOC) (2008).

P. J. Winzer, A. H. Gnauck, "112-Gb/s polarization-multiplexed 16-QAM on a 25-GHz WDM grid," Proc. Eur. Conf. Opt. Commun. (ECOC) (2008).

H. Takahashi, A. A. Amin, S. L. Jansen, I. Morita, H. Tanaka, "DWDM transmission with 7.0 bit/s/Hz spectral efficiency using 8$\,\times\,$65.1 Gbit/s coherent PDM OFDM signals," Proc. Opt. Fiber Commun. Conf. (OFC) (2009).

A. H. Gnauck, P. J. Winzer, C. R. Doerr, L. L. Buhl, "10 112-Gb/s PDm 16-QAM transmission over 630 km of fiber with 6.2-b/s/Hz
spectral efficiency," Proc. Opt. Fiber Commun. Conf. (OFC) (2009).

L. Hanzo, W. Webb, T. Keller, Single- and Multi-Carrier Quadrature Amplitude Modulation (Wiley, 2000).

J. H. Conway, N. J. A. Sloane, Sphere Packings, Lattices and Groups (Springer-Verlag, 1993).