Abstract

We experimentally demonstrate a novel synchronous 10.66Gbit/s DPSK OEO regenerator which uses a feed-forward carrier extraction scheme with an injection-locked laser to synchronize the regenerated signal wavelength to the incoming signal wavelength. After injection-locking, a low-cost DFB laser used at the regenerator exhibited the same linewidth characteristics as the narrow line-width transmitter laser. The phase regeneration properties of the regenerator were evaluated by emulating random Gaussian phase noise applied to the DPSK signal before the regenerator using a phase modulator driven by an arbitrary waveform generator. The overall performance was evaluated in terms of electrical eye-diagrams, BER measurements, and constellation diagrams.

© 2011 OSA

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References

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  1. Cisco white paper, “Hyperconnectivity and the approaching Zettabyte era,” www.cisco.com (2010).
  2. A. Sano, H. Masuda, T. Kobayashi, M. Fujiwara, K. Horikoshi, E. Yoshida, Y. Miyamoto, M. Matsui, M. Mizoguchi, H. Yamazaki, Y. Sakamaki, and H. Ishii, “69.1-Tb/s (432x171-Gb/s) C- and extended L-band transmission over 240 km using PDM-16-QAM modulation and digital coherent detection,” Proc. OFC 2010, paper PDPB7, (2010).
  3. A. D. Ellis, F. C. G. Gunning, J. Zhao, S. K. Ibrahim, P. Frascella, N. MacSuibhne, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, L. Grüner-Nielsen, D. Jakobsen, S. Herstøm, R. Phelam, J. O'Gorman, A. Bogris, D. Syrridis, S. Dasgupta, P. Petropoulos, and D. J. Rihaedson, “Recent progress in multi-carrier transmission technologies,” Proc. OECC 2010, paper 8B3–1 (2010).
  4. G. Raybon, “All-optical regeneration: the holy grail or cold fusion?” Proc. IEEE Photonics Society Summer Topical Meeting, paper MC1.2 (2010).
  5. R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
    [CrossRef]
  6. S. Sygletos, I. Tomkos, and J. Leuthold, “Technological challenges on the road toward transparent networking,” J. Opt. Netw. 7(4), 321–350 (2008).
    [CrossRef]
  7. F. Parmigiani, R. Slavík, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase regeneration of 40Gbit/s DPSK signals in a black-box phase sensitive amplifier,” Proc. OFC 2010, paper PDPC3 (2010).
  8. K. Croussore and G. F. Li, “Phase and amplitude regeneration of differential phase-shift keyed signals using phase-sensitive amplification,” IEEE J. Sel. Top. Quantum Electron. 14(3), 648–658 (2008).
    [CrossRef]
  9. S.K. Ibrahim, S. Sygletos, R. Weerasuriya, and A.D. Ellis, “Novel carrier extraction scheme for phase modulated signals using feed-forward based modulation stripping,” ECOC 2010, We7.A4 (2010).
  10. A. Hidayat, B. Koch, V. Mirvoda, H. Zhang, M. Lichtinger, D. Sandel, and R. Noé, “Optical 5 krad/s endless polarisation tracking,” Electron. Lett. 44(8), 546–547 (2008).
    [CrossRef]
  11. M. Rochette, J. N. Kutz, J. L. Blows, D. Moss, J. T. Mok, and B. J. Eggleton, “Bit-error-ratio improvement with 2R optical regenerators,” IEEE Photon. Technol. Lett. 17(4), 908–910 (2005).
    [CrossRef]

2010

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

2008

K. Croussore and G. F. Li, “Phase and amplitude regeneration of differential phase-shift keyed signals using phase-sensitive amplification,” IEEE J. Sel. Top. Quantum Electron. 14(3), 648–658 (2008).
[CrossRef]

A. Hidayat, B. Koch, V. Mirvoda, H. Zhang, M. Lichtinger, D. Sandel, and R. Noé, “Optical 5 krad/s endless polarisation tracking,” Electron. Lett. 44(8), 546–547 (2008).
[CrossRef]

S. Sygletos, I. Tomkos, and J. Leuthold, “Technological challenges on the road toward transparent networking,” J. Opt. Netw. 7(4), 321–350 (2008).
[CrossRef]

2005

M. Rochette, J. N. Kutz, J. L. Blows, D. Moss, J. T. Mok, and B. J. Eggleton, “Bit-error-ratio improvement with 2R optical regenerators,” IEEE Photon. Technol. Lett. 17(4), 908–910 (2005).
[CrossRef]

Andrekson, P.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Blows, J. L.

M. Rochette, J. N. Kutz, J. L. Blows, D. Moss, J. T. Mok, and B. J. Eggleton, “Bit-error-ratio improvement with 2R optical regenerators,” IEEE Photon. Technol. Lett. 17(4), 908–910 (2005).
[CrossRef]

Bogris, A.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Croussore, K.

K. Croussore and G. F. Li, “Phase and amplitude regeneration of differential phase-shift keyed signals using phase-sensitive amplification,” IEEE J. Sel. Top. Quantum Electron. 14(3), 648–658 (2008).
[CrossRef]

Dasgupta, S.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Eggleton, B. J.

M. Rochette, J. N. Kutz, J. L. Blows, D. Moss, J. T. Mok, and B. J. Eggleton, “Bit-error-ratio improvement with 2R optical regenerators,” IEEE Photon. Technol. Lett. 17(4), 908–910 (2005).
[CrossRef]

Ellis, A. D.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Grüner-Nielsen, L.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Herstrøm, S.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Hidayat, A.

A. Hidayat, B. Koch, V. Mirvoda, H. Zhang, M. Lichtinger, D. Sandel, and R. Noé, “Optical 5 krad/s endless polarisation tracking,” Electron. Lett. 44(8), 546–547 (2008).
[CrossRef]

Jakobsen, D.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Kakande, J.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Koch, B.

A. Hidayat, B. Koch, V. Mirvoda, H. Zhang, M. Lichtinger, D. Sandel, and R. Noé, “Optical 5 krad/s endless polarisation tracking,” Electron. Lett. 44(8), 546–547 (2008).
[CrossRef]

Kutz, J. N.

M. Rochette, J. N. Kutz, J. L. Blows, D. Moss, J. T. Mok, and B. J. Eggleton, “Bit-error-ratio improvement with 2R optical regenerators,” IEEE Photon. Technol. Lett. 17(4), 908–910 (2005).
[CrossRef]

Leuthold, J.

Li, G. F.

K. Croussore and G. F. Li, “Phase and amplitude regeneration of differential phase-shift keyed signals using phase-sensitive amplification,” IEEE J. Sel. Top. Quantum Electron. 14(3), 648–658 (2008).
[CrossRef]

Lichtinger, M.

A. Hidayat, B. Koch, V. Mirvoda, H. Zhang, M. Lichtinger, D. Sandel, and R. Noé, “Optical 5 krad/s endless polarisation tracking,” Electron. Lett. 44(8), 546–547 (2008).
[CrossRef]

Lundström, C.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Mirvoda, V.

A. Hidayat, B. Koch, V. Mirvoda, H. Zhang, M. Lichtinger, D. Sandel, and R. Noé, “Optical 5 krad/s endless polarisation tracking,” Electron. Lett. 44(8), 546–547 (2008).
[CrossRef]

Mok, J. T.

M. Rochette, J. N. Kutz, J. L. Blows, D. Moss, J. T. Mok, and B. J. Eggleton, “Bit-error-ratio improvement with 2R optical regenerators,” IEEE Photon. Technol. Lett. 17(4), 908–910 (2005).
[CrossRef]

Moss, D.

M. Rochette, J. N. Kutz, J. L. Blows, D. Moss, J. T. Mok, and B. J. Eggleton, “Bit-error-ratio improvement with 2R optical regenerators,” IEEE Photon. Technol. Lett. 17(4), 908–910 (2005).
[CrossRef]

Noé, R.

A. Hidayat, B. Koch, V. Mirvoda, H. Zhang, M. Lichtinger, D. Sandel, and R. Noé, “Optical 5 krad/s endless polarisation tracking,” Electron. Lett. 44(8), 546–547 (2008).
[CrossRef]

O’Gorman, J.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Parmigiani, F.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Petropoulos, P.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Phelan, R.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Richardson, D. J.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Rochette, M.

M. Rochette, J. N. Kutz, J. L. Blows, D. Moss, J. T. Mok, and B. J. Eggleton, “Bit-error-ratio improvement with 2R optical regenerators,” IEEE Photon. Technol. Lett. 17(4), 908–910 (2005).
[CrossRef]

Sandel, D.

A. Hidayat, B. Koch, V. Mirvoda, H. Zhang, M. Lichtinger, D. Sandel, and R. Noé, “Optical 5 krad/s endless polarisation tracking,” Electron. Lett. 44(8), 546–547 (2008).
[CrossRef]

Sjödin, M.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Slavík, R.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Sygletos, S.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

S. Sygletos, I. Tomkos, and J. Leuthold, “Technological challenges on the road toward transparent networking,” J. Opt. Netw. 7(4), 321–350 (2008).
[CrossRef]

Syvridis, D.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Tomkos, I.

Weerasuriya, R.

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Zhang, H.

A. Hidayat, B. Koch, V. Mirvoda, H. Zhang, M. Lichtinger, D. Sandel, and R. Noé, “Optical 5 krad/s endless polarisation tracking,” Electron. Lett. 44(8), 546–547 (2008).
[CrossRef]

Electron. Lett.

A. Hidayat, B. Koch, V. Mirvoda, H. Zhang, M. Lichtinger, D. Sandel, and R. Noé, “Optical 5 krad/s endless polarisation tracking,” Electron. Lett. 44(8), 546–547 (2008).
[CrossRef]

IEEE J. Sel. Top. Quantum Electron.

K. Croussore and G. F. Li, “Phase and amplitude regeneration of differential phase-shift keyed signals using phase-sensitive amplification,” IEEE J. Sel. Top. Quantum Electron. 14(3), 648–658 (2008).
[CrossRef]

IEEE Photon. Technol. Lett.

M. Rochette, J. N. Kutz, J. L. Blows, D. Moss, J. T. Mok, and B. J. Eggleton, “Bit-error-ratio improvement with 2R optical regenerators,” IEEE Photon. Technol. Lett. 17(4), 908–910 (2005).
[CrossRef]

J. Opt. Netw.

Nat. Photonics

R. Slavík, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase and amplitude regenerator for next-generation telecommunications systems,” Nat. Photonics 4(10), 690–695 (2010).
[CrossRef]

Other

F. Parmigiani, R. Slavík, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, A. D. Ellis, L. Grüner-Nielsen, D. Jakobsen, S. Herstrøm, R. Phelan, J. O’Gorman, A. Bogris, D. Syvridis, S. Dasgupta, P. Petropoulos, and D. J. Richardson, “All-optical phase regeneration of 40Gbit/s DPSK signals in a black-box phase sensitive amplifier,” Proc. OFC 2010, paper PDPC3 (2010).

S.K. Ibrahim, S. Sygletos, R. Weerasuriya, and A.D. Ellis, “Novel carrier extraction scheme for phase modulated signals using feed-forward based modulation stripping,” ECOC 2010, We7.A4 (2010).

Cisco white paper, “Hyperconnectivity and the approaching Zettabyte era,” www.cisco.com (2010).

A. Sano, H. Masuda, T. Kobayashi, M. Fujiwara, K. Horikoshi, E. Yoshida, Y. Miyamoto, M. Matsui, M. Mizoguchi, H. Yamazaki, Y. Sakamaki, and H. Ishii, “69.1-Tb/s (432x171-Gb/s) C- and extended L-band transmission over 240 km using PDM-16-QAM modulation and digital coherent detection,” Proc. OFC 2010, paper PDPB7, (2010).

A. D. Ellis, F. C. G. Gunning, J. Zhao, S. K. Ibrahim, P. Frascella, N. MacSuibhne, F. Parmigiani, J. Kakande, C. Lundström, M. Sjödin, P. Andrekson, R. Weerasuriya, S. Sygletos, L. Grüner-Nielsen, D. Jakobsen, S. Herstøm, R. Phelam, J. O'Gorman, A. Bogris, D. Syrridis, S. Dasgupta, P. Petropoulos, and D. J. Rihaedson, “Recent progress in multi-carrier transmission technologies,” Proc. OECC 2010, paper 8B3–1 (2010).

G. Raybon, “All-optical regeneration: the holy grail or cold fusion?” Proc. IEEE Photonics Society Summer Topical Meeting, paper MC1.2 (2010).

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Figures (6)

Fig. 1
Fig. 1

Schematic of a synchronous DPSK regenerator system.

Fig. 2
Fig. 2

Optical spectrum of the (a) DPSK signal, (b) extracted carrier, (c) injection-locked DFB laser, and (d) regenerated DPSK signal (A). Measured self-heterodyned linewidth for the ILL vs. regenerator input power (B).

Fig. 3
Fig. 3

Eye-diagrams of 10.66Gbit/s demodulated DPSK signals at the input and output of the DPSK regenerator at different regenerator input power levels (A). Electrical measured SNR for the input and output of the regenerator at different regenerator input power levels (B).

Fig. 4
Fig. 4

Measured RF spectrum (A) and histogram (B) of the electrical Gaussian noise signal applied to the phase modulator.

Fig. 5
Fig. 5

BER measurements vs. optical power for differentially demodulated 10.66Gbit/s DPSK signals before regeneration with phase noise added (A), and after regeneration (B).

Fig. 6
Fig. 6

Measured eye diagrams for the differentially detected DPSK (top) and coherently detected DPSK signal constellation diagrams (bottom) at the input and output of the regenerator for different input phase noise levels.

Tables (1)

Tables Icon

Table 1 Phase Noise (PN) Estimated for Different Applied Voltage Cases

Metrics