J. Armstrong, "OFDM for optical communications," J. Lightw. Technol. 27, 189-204 (2009).

G. Goldfarb, G. Li, "Efficient backward-propagation using wavelet-based
filtering for fiber backward-propagation," Opt. Exp. 17, 8815-8821 (2009).

Q. Zhang, M. I. Hayee, "Symmetrized split-step Fourier scheme to control
global simulation accuracy in fiber-optic communication systems," J. Lightw. Technol. 26, 302-316 (2008).

E. Mateo, L. Zhu, G. Li, "Impact of XPM and FWM on the digital implementation of
impairment compensation for WDM transmission using backward
propagation," Opt. Exp. 16, 16124-16137 (2008).

D. J. F. Barros, J. M. Kahn, "Optimized dispersion compensation using orthogonal
frequency-division multiplexing," J. Lightw. Technol. 26, 2889-2898 (2008).

H. Sun, K.-T. Wu, K. Roberts, "Real-time measurement of a 40-Gb/s coherent system," Opt. Exp. 16, 873-879 (2008).

E. Ip, A. P. T. Lau, D. J. F. Barros, J. M. Kahn, "Coherent detection in optical fiber systems," Opt. Exp. 16, 753-791 (2008).

S. J. Savory, "Digital filters for coherent optical receivers," Opt. Exp. 16, 804-817 (2008).

W. Shieh, K.-P. Ho, "Equalization-enhanced phase noise for
coherent-detection systems using electronic digital signal
processing," Opt. Exp. 16, 15718-15727 (2008).

E. Ip, J. M. Kahn, "Compensation of dispersion and nonlinear impairments
using digital backpropagation," J. Lightw. Technol. 26, 3416-3425 (2008).

E. Inuzuka, E. Yamazaki, K. Yonenaga, A. Takada, "Performance of nonlinear interchannel crosstalk
pre-compensation at zero-dispersion wavelength using carrier
phase-locked WDM," Electron. Lett. 43, 729-730 (2007).

E. Ip, J. M. Kahn, "Feedforward carrier recovery for coherent optical
communications," J. Lightw. Technol. 25, 2675-2692 (2007).

E. Ip, J. M. Kahn, "Digital equalization of chromatic dispersion and
polarization mode dispersion," J. Lightw. Technol. 25, 2033-2043 (2007).

A. J. Lowery, "Fiber nonlinearity mitigation in optical links that
use OFDM for dispersion compensation," IEEE Photon. Technol. Lett. 19, 1556-1558 (2007).

W. Shieh, X. Yi, Y. Ma, Y. Tang, "Theoretical and experimental study on PMD-supported
transmission using polarization diversity in coherent optical OFDM
systems," Opt. Exp. 15, 9936-9947 (2007).

A. J. Lowery, "Fiber nonlinearity pre- and post-compensation for
long-haul optical links using OFDM," Opt. Exp. 15, 12965-12970 (2007).

E. Ip, J. M. Kahn, "Power spectra of return-to-zero optical signals," J. Lightw. Technol. 24, 1610-1618 (2006).

S. Tsukamoto, K. Katoh, K. Kikuchi, "Coherent demodulation of optical multilevel
phase-shift-keying signals using homodyne detection and digital
signal processing," IEEE Photon. Technol. Lett. 18, 1131-1133 (2006).

A. Tarighat, R. C. J. Hsu, A. H. Sayed, B. Jalali, "Digital adaptive phase noise reduction in coherent
optical links," J. Lightw. Technol. 24, 1269-1276 (2006).

K. Roberts, C. Li, L. Strawczynski, M. O'Sullivan, I. Hardcastle, "Electronic precompensation of optical nonlinearity," IEEE Photon. Technol. Lett. 18, 403-405 (2006).

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

E. Ip, J. M. Kahn, "Carrier synchronization for 3- and 4-bit-per-symbol
optical transmission," J. Lightw. Technol. 23, 4110-4124 (2005).

J. M. Kahn, K.-P. Ho, "Spectral efficiency limits and modulation/detection
techniques for DWDM systems," IEEE J. Sel. Topics Quantum Electron. 10, 259-272 (2004).

A. Chowdhury, R.-J. Essiambre, "Optical phase conjugation and pseudolinear
transmission," Opt. Lett. 29, 1105-1107 (2004).

K.-P. Ho, J. M. Kahn, "Electronic compensation technique to mitigate
nonlinear phase noise," J. Lightw. Technol. 22, 779-783 (2004).

S. Wu, Y. Bar-Ness, "OFDM systems in the presence of phase noise:
Consequences and solutions," IEEE Trans. Commun. 52, 1988-1996 (2004).

M. G. Taylor, "Coherent detection method using DSP for demodulation
of signal and subsequent equalization of propagation impairments," IEEE Photon. Technol. Lett. 16, 674-676 (2004).

Y. Chen, T. Le-Ngoc, B. Champagne, C. Xu, "Recursive least squares constant modulus algorithm for
blind adaptive array," IEEE Trans. Signal Process. 52, 1452-1456 (2004).

J. H. Lee, M. S. Kim, Y. C. Chung, "Statistical PMD emulator using variable DGD elements," IEEE Photon Technol. Lett. 15, 54-56 (2003).

O. V. Sinkin, R. Holzlöhner, J. Zweck, C. Menyuk, "Optimization of the split-step Fourier method in
modeling optical-fiber communication systems," J. Lightw. Technol. 21, 61-68 (2003).

J. Yang, J.-J. Werner, G. A. Dumont, "The multimodulus blind equalization and its
generalized algorithms," IEEE J. Sel. Areas Commun. 20, 997-1015 (2002).

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

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

J. P. Gordon, H. Kogelnik, "PMD fundamentals: Polarization mode dispersion in
optical fibers," Proc. Nat. Acad. Sci. 97, 4541-4550 (2000).

J. J. Shynk, "Frequency-domain multirate adaptive filtering," IEEE Signal Process. Mag. 9, 14-37 (1992).

J. R. Barry, J. M. Kahn, "Carrier synchronization for homodyne and heterodyne
detection of optical quadriphase-shift keying," J. Lightw. Technol. 10, 1939-1951 (1992).

S. Norimatsu, K. Iwashita, "Linewidth requirements for optical synchronous
detection systems with nonnegligible loop delay time," J. Lightw. Technol. 10, 341-349 (1992).

S. G. Evangelides, L. F. Mollenauer, J. P. Gordon, N. S. Bergano, "Polarization multiplexing with solitons," J. Lightw. Technol. 10, 28-35 (1992).

J. M. Kahn, A. M. Porter, U. Padan, "Heterodyne detection of 310-Mb/s quadriphase-shift
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E. Inuzuka, E. Yamazaki, K. Yonenaga, A. Takada, "Performance of nonlinear interchannel crosstalk
pre-compensation at zero-dispersion wavelength using carrier
phase-locked WDM," Electron. Lett. 43, 729-730 (2007).

J. Yang, J.-J. Werner, G. A. Dumont, "The multimodulus blind equalization and its
generalized algorithms," IEEE J. Sel. Areas Commun. 20, 997-1015 (2002).

J. M. Kahn, K.-P. Ho, "Spectral efficiency limits and modulation/detection
techniques for DWDM systems," IEEE J. Sel. Topics Quantum Electron. 10, 259-272 (2004).

J. H. Lee, M. S. Kim, Y. C. Chung, "Statistical PMD emulator using variable DGD elements," IEEE Photon Technol. Lett. 15, 54-56 (2003).

J. M. Kahn, A. H. Gnauck, J. J. Veselka, S. K. Korotky, B. L. Kasper, "4-Gb/s PSK homodyne transmission system using
phase-locked semiconductor lasers," IEEE Photon. Technol. Lett. 2, 285-287 (1990).

J. M. Kahn, A. M. Porter, U. Padan, "Heterodyne detection of 310-Mb/s quadriphase-shift
keying using fourth-power optical phase-locked loop," IEEE Photon. Technol. Lett. 4, 1397-1399 (1992).

S. Tsukamoto, K. Katoh, K. Kikuchi, "Coherent demodulation of optical multilevel
phase-shift-keying signals using homodyne detection and digital
signal processing," IEEE Photon. Technol. Lett. 18, 1131-1133 (2006).

M. G. Taylor, "Coherent detection method using DSP for demodulation
of signal and subsequent equalization of propagation impairments," IEEE Photon. Technol. Lett. 16, 674-676 (2004).

K. Roberts, C. Li, L. Strawczynski, M. O'Sullivan, I. Hardcastle, "Electronic precompensation of optical nonlinearity," IEEE Photon. Technol. Lett. 18, 403-405 (2006).

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

A. J. Lowery, "Fiber nonlinearity mitigation in optical links that
use OFDM for dispersion compensation," IEEE Photon. Technol. Lett. 19, 1556-1558 (2007).

J. J. Shynk, "Frequency-domain multirate adaptive filtering," IEEE Signal Process. Mag. 9, 14-37 (1992).

D. Mansour, A. H. Gray, "Unconstrained frequency-domain adaptive filter," IEEE Trans. Acoust. Speech Signal Process. ASSP-30, 726-734 (1982).

J. S. Soo, K. K. Pang, "Multidelay block frequency domain adaptive filter," IEEE Trans. Acoust. Speech Signal Process. 38, 373-376 (1990).

D. N. Godard, "Self-recovering equalization and carrier tracking in
two-dimensional data communication systems," IEEE Trans. Commun. COM-28, 1867-1875 (1980).

S. Wu, Y. Bar-Ness, "OFDM systems in the presence of phase noise:
Consequences and solutions," IEEE Trans. Commun. 52, 1988-1996 (2004).

A. J. Viterbi, A. M. Viterbi, "Nonlinear estimation of PSK-modulated carrier phase
with application to burst digital transmission," IEEE Trans. Inf. Theory IT-29, 543-551 (1983).

Y. Chen, T. Le-Ngoc, B. Champagne, C. Xu, "Recursive least squares constant modulus algorithm for
blind adaptive array," IEEE Trans. Signal Process. 52, 1452-1456 (2004).

A. Tarighat, R. C. J. Hsu, A. H. Sayed, B. Jalali, "Digital adaptive phase noise reduction in coherent
optical links," J. Lightw. Technol. 24, 1269-1276 (2006).

I. Fatadin, D. Ives, S. Savory, "Blind equalization and carrier phase recovery in
16-QAM optical coherent system," J. Lightw. Technol. .

K.-P. Ho, J. M. Kahn, "Electronic compensation technique to mitigate
nonlinear phase noise," J. Lightw. Technol. 22, 779-783 (2004).

E. Ip, J. M. Kahn, "Compensation of dispersion and nonlinear impairments
using digital backpropagation," J. Lightw. Technol. 26, 3416-3425 (2008).

O. V. Sinkin, R. Holzlöhner, J. Zweck, C. Menyuk, "Optimization of the split-step Fourier method in
modeling optical-fiber communication systems," J. Lightw. Technol. 21, 61-68 (2003).

Q. Zhang, M. I. Hayee, "Symmetrized split-step Fourier scheme to control
global simulation accuracy in fiber-optic communication systems," J. Lightw. Technol. 26, 302-316 (2008).

J. R. Barry, J. M. Kahn, "Carrier synchronization for homodyne and heterodyne
detection of optical quadriphase-shift keying," J. Lightw. Technol. 10, 1939-1951 (1992).

S. Norimatsu, K. Iwashita, "Linewidth requirements for optical synchronous
detection systems with nonnegligible loop delay time," J. Lightw. Technol. 10, 341-349 (1992).

E. Ip, J. M. Kahn, "Carrier synchronization for 3- and 4-bit-per-symbol
optical transmission," J. Lightw. Technol. 23, 4110-4124 (2005).

E. Ip, J. M. Kahn, "Feedforward carrier recovery for coherent optical
communications," J. Lightw. Technol. 25, 2675-2692 (2007).

J. Armstrong, "OFDM for optical communications," J. Lightw. Technol. 27, 189-204 (2009).

D. J. F. Barros, J. M. Kahn, "Optimized dispersion compensation using orthogonal
frequency-division multiplexing," J. Lightw. Technol. 26, 2889-2898 (2008).

E. Ip, J. M. Kahn, "Digital equalization of chromatic dispersion and
polarization mode dispersion," J. Lightw. Technol. 25, 2033-2043 (2007).

E. Ip, J. M. Kahn, "Power spectra of return-to-zero optical signals," J. Lightw. Technol. 24, 1610-1618 (2006).

S. G. Evangelides, L. F. Mollenauer, J. P. Gordon, N. S. Bergano, "Polarization multiplexing with solitons," J. Lightw. Technol. 10, 28-35 (1992).

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

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

W. Shieh, K.-P. Ho, "Equalization-enhanced phase noise for
coherent-detection systems using electronic digital signal
processing," Opt. Exp. 16, 15718-15727 (2008).

G. Goldfarb, G. Li, "Efficient backward-propagation using wavelet-based
filtering for fiber backward-propagation," Opt. Exp. 17, 8815-8821 (2009).

W. Shieh, X. Yi, Y. Ma, Y. Tang, "Theoretical and experimental study on PMD-supported
transmission using polarization diversity in coherent optical OFDM
systems," Opt. Exp. 15, 9936-9947 (2007).

A. J. Lowery, "Fiber nonlinearity pre- and post-compensation for
long-haul optical links using OFDM," Opt. Exp. 15, 12965-12970 (2007).

E. Mateo, L. Zhu, G. Li, "Impact of XPM and FWM on the digital implementation of
impairment compensation for WDM transmission using backward
propagation," Opt. Exp. 16, 16124-16137 (2008).

H. Sun, K.-T. Wu, K. Roberts, "Real-time measurement of a 40-Gb/s coherent system," Opt. Exp. 16, 873-879 (2008).

E. Ip, A. P. T. Lau, D. J. F. Barros, J. M. Kahn, "Coherent detection in optical fiber systems," Opt. Exp. 16, 753-791 (2008).

S. J. Savory, "Digital filters for coherent optical receivers," Opt. Exp. 16, 804-817 (2008).

S. U. H. Qureshi, "Adaptive equalization," Proc. IEEE 73, 1349-1387 (1985).

J. P. Gordon, H. Kogelnik, "PMD fundamentals: Polarization mode dispersion in
optical fibers," Proc. Nat. Acad. Sci. 97, 4541-4550 (2000).

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G. Charlet, M. Salsi, P. Tran, M. Bertolini, H. Mardoyan, J. Renaudier, O. Bertran-Pardo, S. Bigo, "72 $\times$ 100 Gb/s transmission over transoceanic distance,
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K. Kikuchi, M. Fukase, S. Kim, "Electronic post-compensation for nonlinear phase noise
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G. Charlet, N. Maaref, J. Renaudier, H. Mardoyan, P. Tran, S. Bigo, "Transmission of 40 Gb/s QPSK with coherent detection
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R.-J. Essiambre, G. J. Foschini, P. J. Winzer, G. Kramer, E. C. Burrows, "The capacity of fiber-optic communication systems," Opt. Fiber Commun. Conf. San DiegoCA (2009) paper OTuE17.

R.-J. Essiambre, G. J. Foschini, P. J. Winzer, G. Kramer, "Exploring capacity limits of fibre-optic communication
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R.-J. Essiambre, G. J. Foschini, P. J. Winzer, G. Kramer, E. C. Burrows, "The capacity of fiber-optic communication systems," Opt. Fiber Commun. Conf. San DiegoCA (2008) paper OTuE1.

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