Abstract

A simple and robust all-optical nonreturn-to-zero to return-to-zero (RZ) format converter is demonstrated and investigated using a semiconductor optical amplifier (SOA) and a reconfigurable delayed interferometer. The scheme can be used to convert input signals at different bit rates and obtain converted signals with tunable duty cycles. Format conversion at 10Gb/s is achieved with a negative power penalty of 4.9dB at a bit-error rate of 109. Transmission of the converted RZ signal over a dispersion-managed fiber link of 80km results in only a small power penalty of 0.9dB. In addition, the format converter is found to be insensitive to the power fluctuation of the optical clock, as the SOA works in the saturation regime.

© 2010 Optical Society of America

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References

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  1. D. Norte, E. Park, and A. E. Willner, “All-optical TDM-to-WDM data format conversion in a dynamically reconfigurable WDM network,” IEEE Photonics Technol. Lett. 7, 920-922(1995).
    [CrossRef]
  2. J. Yu, G. K. Chang, J. Barry, and Y. Su, “40 Gbit/s signal format conversion from NRZ to RZ using a Mach-Zehnder delay interferometer,” Opt. Commun. 248, 419-422 (2005).
    [CrossRef]
  3. C. W. Chow, C. S. Wong, and H. K. Tsang, “All-optical NRZ to RZ format and wavelength converter by dual wavelength injection locking,” Opt. Commun. 209, 329-334 (2002).
    [CrossRef]
  4. Y.-C. Chang and G.-R. Lin, “10 Gbit/s tunable dual-wavelength nonreturn-to-zero-to-return-to-zero data-format transformer based on a non-direct-current-biased Fabry-Perot laser diode,” Appl. Opt. 44, 3058-3062 (2005).
    [CrossRef] [PubMed]
  5. L. Huo, Y. Dong, C. Y. Lou, and Y. Z. Gao, “Clock extraction using an optoelectronic oscillator from high-speed NRZ signal and NRZ-to-RZ format transformation,” IEEE Photonics Technol. Lett. 15, 981-983 (2003).
    [CrossRef]
  6. S. L. Pan and J. P. Yao, “Optical NRZ to RZ format conversion based on a frequency-doubling optoelectronic oscillator,” in Lasers and Electro-Optics Society Annual Meeting Conference Proceedings, 2009 (IEEE, 2009), paper ThU2.
  7. C. H. Kwok and C. Lin, “Polarization-insensitive all-optical NRZ-to-RZ format conversion by spectral filtering of a cross phase modulation broadened signal spectrum,” IEEE J. Sel. Top. Quantum Electron. 12, 451-458 (2006).
    [CrossRef]
  8. J. Dong, X. Zhang, J. Xu, D. Huang, S. Fu, and P. Shum, “40 Gb/s all-optical NRZ to RZ format conversion using single SOA assisted by optical bandpass filter,” Opt. Express 15, 2907-2914 (2007).
    [CrossRef] [PubMed]
  9. B. Mikkelsen, M. Vaa, H. N. Poulsen, S. L. Danielsen, C. Joergensen, A. Kloch, P. B. Hansen, K. E. Stubkjaer, K. Wunstel, K. Daub, E. Lach, G. Laube, W. Idler, M. Schilling, and S. Bouchoule, “40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer,” Electron. Lett. 33, 133-134 (1997).
    [CrossRef]
  10. X. Lei, B. C. Wang, V. Baby, I. Glesk, and P. R. Prucnal, “All-optical data format conversion between RZ and NRZ based on a Mach-Zehnder interferometric wavelength converter,” IEEE Photonics Technol. Lett. 15, 308-310 (2003).
    [CrossRef]
  11. L. C. Ghiu, K. Y. Jong, P. C. Soo, L. H. Jae, and P. Chang-Soo, “Experimental demonstration of 10 Gb/s data format conversions between NRZ and RZ using SOA-loop-mirror,” J. Lightwave Technol. 23, 834-841 (2005).
    [CrossRef]
  12. Y. Yu, X. Zhang, J. B. Rosas-Fernández, D. Huang, R. V. Penty, and I. H. White, “ Single SOA based 16 DWDM channels all-optical NRZ-to-RZ format conversions with different duty cycles,” Opt. Express 16, 16166-16171 (2008).
    [CrossRef] [PubMed]
  13. X. Yang, A. K. Mishra, R. J. Manning, R. P. Webb, and A. D. Ellis, “All-optical 42.6 Gbit/s NRZ to RZ format conversion by cross-phase modulation in single SOA,” Electron. Lett. 43, 890-892 (2007).
    [CrossRef]
  14. H. N. Tan, M. Matsuura, and N. Kishi, “Transmission performance of a wavelength and NRZ-to-RZ format conversion with pulsewidth tunability by combination of SOA- and fiber-based switches,” Opt. Express 16, 19063-19071 (2008).
    [CrossRef]
  15. M. Doi, M. Sugiyama, K. Tanaka, and M. Kawai, “Advanced LiNbO3 optical modulators for broadband optical communications,” IEEE J. Sel. Top. Quantum Electron. 12, 745-750(2006).
    [CrossRef]

2008 (2)

2007 (2)

X. Yang, A. K. Mishra, R. J. Manning, R. P. Webb, and A. D. Ellis, “All-optical 42.6 Gbit/s NRZ to RZ format conversion by cross-phase modulation in single SOA,” Electron. Lett. 43, 890-892 (2007).
[CrossRef]

J. Dong, X. Zhang, J. Xu, D. Huang, S. Fu, and P. Shum, “40 Gb/s all-optical NRZ to RZ format conversion using single SOA assisted by optical bandpass filter,” Opt. Express 15, 2907-2914 (2007).
[CrossRef] [PubMed]

2006 (2)

C. H. Kwok and C. Lin, “Polarization-insensitive all-optical NRZ-to-RZ format conversion by spectral filtering of a cross phase modulation broadened signal spectrum,” IEEE J. Sel. Top. Quantum Electron. 12, 451-458 (2006).
[CrossRef]

M. Doi, M. Sugiyama, K. Tanaka, and M. Kawai, “Advanced LiNbO3 optical modulators for broadband optical communications,” IEEE J. Sel. Top. Quantum Electron. 12, 745-750(2006).
[CrossRef]

2005 (3)

2003 (2)

L. Huo, Y. Dong, C. Y. Lou, and Y. Z. Gao, “Clock extraction using an optoelectronic oscillator from high-speed NRZ signal and NRZ-to-RZ format transformation,” IEEE Photonics Technol. Lett. 15, 981-983 (2003).
[CrossRef]

X. Lei, B. C. Wang, V. Baby, I. Glesk, and P. R. Prucnal, “All-optical data format conversion between RZ and NRZ based on a Mach-Zehnder interferometric wavelength converter,” IEEE Photonics Technol. Lett. 15, 308-310 (2003).
[CrossRef]

2002 (1)

C. W. Chow, C. S. Wong, and H. K. Tsang, “All-optical NRZ to RZ format and wavelength converter by dual wavelength injection locking,” Opt. Commun. 209, 329-334 (2002).
[CrossRef]

1997 (1)

B. Mikkelsen, M. Vaa, H. N. Poulsen, S. L. Danielsen, C. Joergensen, A. Kloch, P. B. Hansen, K. E. Stubkjaer, K. Wunstel, K. Daub, E. Lach, G. Laube, W. Idler, M. Schilling, and S. Bouchoule, “40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer,” Electron. Lett. 33, 133-134 (1997).
[CrossRef]

1995 (1)

D. Norte, E. Park, and A. E. Willner, “All-optical TDM-to-WDM data format conversion in a dynamically reconfigurable WDM network,” IEEE Photonics Technol. Lett. 7, 920-922(1995).
[CrossRef]

Baby, V.

X. Lei, B. C. Wang, V. Baby, I. Glesk, and P. R. Prucnal, “All-optical data format conversion between RZ and NRZ based on a Mach-Zehnder interferometric wavelength converter,” IEEE Photonics Technol. Lett. 15, 308-310 (2003).
[CrossRef]

Barry, J.

J. Yu, G. K. Chang, J. Barry, and Y. Su, “40 Gbit/s signal format conversion from NRZ to RZ using a Mach-Zehnder delay interferometer,” Opt. Commun. 248, 419-422 (2005).
[CrossRef]

Bouchoule, S.

B. Mikkelsen, M. Vaa, H. N. Poulsen, S. L. Danielsen, C. Joergensen, A. Kloch, P. B. Hansen, K. E. Stubkjaer, K. Wunstel, K. Daub, E. Lach, G. Laube, W. Idler, M. Schilling, and S. Bouchoule, “40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer,” Electron. Lett. 33, 133-134 (1997).
[CrossRef]

Chang, G. K.

J. Yu, G. K. Chang, J. Barry, and Y. Su, “40 Gbit/s signal format conversion from NRZ to RZ using a Mach-Zehnder delay interferometer,” Opt. Commun. 248, 419-422 (2005).
[CrossRef]

Chang, Y.-C.

Chang-Soo, P.

Chow, C. W.

C. W. Chow, C. S. Wong, and H. K. Tsang, “All-optical NRZ to RZ format and wavelength converter by dual wavelength injection locking,” Opt. Commun. 209, 329-334 (2002).
[CrossRef]

Danielsen, S. L.

B. Mikkelsen, M. Vaa, H. N. Poulsen, S. L. Danielsen, C. Joergensen, A. Kloch, P. B. Hansen, K. E. Stubkjaer, K. Wunstel, K. Daub, E. Lach, G. Laube, W. Idler, M. Schilling, and S. Bouchoule, “40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer,” Electron. Lett. 33, 133-134 (1997).
[CrossRef]

Daub, K.

B. Mikkelsen, M. Vaa, H. N. Poulsen, S. L. Danielsen, C. Joergensen, A. Kloch, P. B. Hansen, K. E. Stubkjaer, K. Wunstel, K. Daub, E. Lach, G. Laube, W. Idler, M. Schilling, and S. Bouchoule, “40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer,” Electron. Lett. 33, 133-134 (1997).
[CrossRef]

Doi, M.

M. Doi, M. Sugiyama, K. Tanaka, and M. Kawai, “Advanced LiNbO3 optical modulators for broadband optical communications,” IEEE J. Sel. Top. Quantum Electron. 12, 745-750(2006).
[CrossRef]

Dong, J.

Dong, Y.

L. Huo, Y. Dong, C. Y. Lou, and Y. Z. Gao, “Clock extraction using an optoelectronic oscillator from high-speed NRZ signal and NRZ-to-RZ format transformation,” IEEE Photonics Technol. Lett. 15, 981-983 (2003).
[CrossRef]

Ellis, A. D.

X. Yang, A. K. Mishra, R. J. Manning, R. P. Webb, and A. D. Ellis, “All-optical 42.6 Gbit/s NRZ to RZ format conversion by cross-phase modulation in single SOA,” Electron. Lett. 43, 890-892 (2007).
[CrossRef]

Fu, S.

Gao, Y. Z.

L. Huo, Y. Dong, C. Y. Lou, and Y. Z. Gao, “Clock extraction using an optoelectronic oscillator from high-speed NRZ signal and NRZ-to-RZ format transformation,” IEEE Photonics Technol. Lett. 15, 981-983 (2003).
[CrossRef]

Ghiu, L. C.

Glesk, I.

X. Lei, B. C. Wang, V. Baby, I. Glesk, and P. R. Prucnal, “All-optical data format conversion between RZ and NRZ based on a Mach-Zehnder interferometric wavelength converter,” IEEE Photonics Technol. Lett. 15, 308-310 (2003).
[CrossRef]

Hansen, P. B.

B. Mikkelsen, M. Vaa, H. N. Poulsen, S. L. Danielsen, C. Joergensen, A. Kloch, P. B. Hansen, K. E. Stubkjaer, K. Wunstel, K. Daub, E. Lach, G. Laube, W. Idler, M. Schilling, and S. Bouchoule, “40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer,” Electron. Lett. 33, 133-134 (1997).
[CrossRef]

Huang, D.

Huo, L.

L. Huo, Y. Dong, C. Y. Lou, and Y. Z. Gao, “Clock extraction using an optoelectronic oscillator from high-speed NRZ signal and NRZ-to-RZ format transformation,” IEEE Photonics Technol. Lett. 15, 981-983 (2003).
[CrossRef]

Idler, W.

B. Mikkelsen, M. Vaa, H. N. Poulsen, S. L. Danielsen, C. Joergensen, A. Kloch, P. B. Hansen, K. E. Stubkjaer, K. Wunstel, K. Daub, E. Lach, G. Laube, W. Idler, M. Schilling, and S. Bouchoule, “40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer,” Electron. Lett. 33, 133-134 (1997).
[CrossRef]

Jae, L. H.

Joergensen, C.

B. Mikkelsen, M. Vaa, H. N. Poulsen, S. L. Danielsen, C. Joergensen, A. Kloch, P. B. Hansen, K. E. Stubkjaer, K. Wunstel, K. Daub, E. Lach, G. Laube, W. Idler, M. Schilling, and S. Bouchoule, “40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer,” Electron. Lett. 33, 133-134 (1997).
[CrossRef]

Jong, K. Y.

Kawai, M.

M. Doi, M. Sugiyama, K. Tanaka, and M. Kawai, “Advanced LiNbO3 optical modulators for broadband optical communications,” IEEE J. Sel. Top. Quantum Electron. 12, 745-750(2006).
[CrossRef]

Kishi, N.

Kloch, A.

B. Mikkelsen, M. Vaa, H. N. Poulsen, S. L. Danielsen, C. Joergensen, A. Kloch, P. B. Hansen, K. E. Stubkjaer, K. Wunstel, K. Daub, E. Lach, G. Laube, W. Idler, M. Schilling, and S. Bouchoule, “40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer,” Electron. Lett. 33, 133-134 (1997).
[CrossRef]

Kwok, C. H.

C. H. Kwok and C. Lin, “Polarization-insensitive all-optical NRZ-to-RZ format conversion by spectral filtering of a cross phase modulation broadened signal spectrum,” IEEE J. Sel. Top. Quantum Electron. 12, 451-458 (2006).
[CrossRef]

Lach, E.

B. Mikkelsen, M. Vaa, H. N. Poulsen, S. L. Danielsen, C. Joergensen, A. Kloch, P. B. Hansen, K. E. Stubkjaer, K. Wunstel, K. Daub, E. Lach, G. Laube, W. Idler, M. Schilling, and S. Bouchoule, “40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer,” Electron. Lett. 33, 133-134 (1997).
[CrossRef]

Laube, G.

B. Mikkelsen, M. Vaa, H. N. Poulsen, S. L. Danielsen, C. Joergensen, A. Kloch, P. B. Hansen, K. E. Stubkjaer, K. Wunstel, K. Daub, E. Lach, G. Laube, W. Idler, M. Schilling, and S. Bouchoule, “40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer,” Electron. Lett. 33, 133-134 (1997).
[CrossRef]

Lei, X.

X. Lei, B. C. Wang, V. Baby, I. Glesk, and P. R. Prucnal, “All-optical data format conversion between RZ and NRZ based on a Mach-Zehnder interferometric wavelength converter,” IEEE Photonics Technol. Lett. 15, 308-310 (2003).
[CrossRef]

Lin, C.

C. H. Kwok and C. Lin, “Polarization-insensitive all-optical NRZ-to-RZ format conversion by spectral filtering of a cross phase modulation broadened signal spectrum,” IEEE J. Sel. Top. Quantum Electron. 12, 451-458 (2006).
[CrossRef]

Lin, G.-R.

Lou, C. Y.

L. Huo, Y. Dong, C. Y. Lou, and Y. Z. Gao, “Clock extraction using an optoelectronic oscillator from high-speed NRZ signal and NRZ-to-RZ format transformation,” IEEE Photonics Technol. Lett. 15, 981-983 (2003).
[CrossRef]

Manning, R. J.

X. Yang, A. K. Mishra, R. J. Manning, R. P. Webb, and A. D. Ellis, “All-optical 42.6 Gbit/s NRZ to RZ format conversion by cross-phase modulation in single SOA,” Electron. Lett. 43, 890-892 (2007).
[CrossRef]

Matsuura, M.

Mikkelsen, B.

B. Mikkelsen, M. Vaa, H. N. Poulsen, S. L. Danielsen, C. Joergensen, A. Kloch, P. B. Hansen, K. E. Stubkjaer, K. Wunstel, K. Daub, E. Lach, G. Laube, W. Idler, M. Schilling, and S. Bouchoule, “40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer,” Electron. Lett. 33, 133-134 (1997).
[CrossRef]

Mishra, A. K.

X. Yang, A. K. Mishra, R. J. Manning, R. P. Webb, and A. D. Ellis, “All-optical 42.6 Gbit/s NRZ to RZ format conversion by cross-phase modulation in single SOA,” Electron. Lett. 43, 890-892 (2007).
[CrossRef]

Norte, D.

D. Norte, E. Park, and A. E. Willner, “All-optical TDM-to-WDM data format conversion in a dynamically reconfigurable WDM network,” IEEE Photonics Technol. Lett. 7, 920-922(1995).
[CrossRef]

Pan, S. L.

S. L. Pan and J. P. Yao, “Optical NRZ to RZ format conversion based on a frequency-doubling optoelectronic oscillator,” in Lasers and Electro-Optics Society Annual Meeting Conference Proceedings, 2009 (IEEE, 2009), paper ThU2.

Park, E.

D. Norte, E. Park, and A. E. Willner, “All-optical TDM-to-WDM data format conversion in a dynamically reconfigurable WDM network,” IEEE Photonics Technol. Lett. 7, 920-922(1995).
[CrossRef]

Penty, R. V.

Poulsen, H. N.

B. Mikkelsen, M. Vaa, H. N. Poulsen, S. L. Danielsen, C. Joergensen, A. Kloch, P. B. Hansen, K. E. Stubkjaer, K. Wunstel, K. Daub, E. Lach, G. Laube, W. Idler, M. Schilling, and S. Bouchoule, “40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer,” Electron. Lett. 33, 133-134 (1997).
[CrossRef]

Prucnal, P. R.

X. Lei, B. C. Wang, V. Baby, I. Glesk, and P. R. Prucnal, “All-optical data format conversion between RZ and NRZ based on a Mach-Zehnder interferometric wavelength converter,” IEEE Photonics Technol. Lett. 15, 308-310 (2003).
[CrossRef]

Rosas-Fernández, J. B.

Schilling, M.

B. Mikkelsen, M. Vaa, H. N. Poulsen, S. L. Danielsen, C. Joergensen, A. Kloch, P. B. Hansen, K. E. Stubkjaer, K. Wunstel, K. Daub, E. Lach, G. Laube, W. Idler, M. Schilling, and S. Bouchoule, “40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer,” Electron. Lett. 33, 133-134 (1997).
[CrossRef]

Shum, P.

Soo, P. C.

Stubkjaer, K. E.

B. Mikkelsen, M. Vaa, H. N. Poulsen, S. L. Danielsen, C. Joergensen, A. Kloch, P. B. Hansen, K. E. Stubkjaer, K. Wunstel, K. Daub, E. Lach, G. Laube, W. Idler, M. Schilling, and S. Bouchoule, “40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer,” Electron. Lett. 33, 133-134 (1997).
[CrossRef]

Su, Y.

J. Yu, G. K. Chang, J. Barry, and Y. Su, “40 Gbit/s signal format conversion from NRZ to RZ using a Mach-Zehnder delay interferometer,” Opt. Commun. 248, 419-422 (2005).
[CrossRef]

Sugiyama, M.

M. Doi, M. Sugiyama, K. Tanaka, and M. Kawai, “Advanced LiNbO3 optical modulators for broadband optical communications,” IEEE J. Sel. Top. Quantum Electron. 12, 745-750(2006).
[CrossRef]

Tan, H. N.

Tanaka, K.

M. Doi, M. Sugiyama, K. Tanaka, and M. Kawai, “Advanced LiNbO3 optical modulators for broadband optical communications,” IEEE J. Sel. Top. Quantum Electron. 12, 745-750(2006).
[CrossRef]

Tsang, H. K.

C. W. Chow, C. S. Wong, and H. K. Tsang, “All-optical NRZ to RZ format and wavelength converter by dual wavelength injection locking,” Opt. Commun. 209, 329-334 (2002).
[CrossRef]

Vaa, M.

B. Mikkelsen, M. Vaa, H. N. Poulsen, S. L. Danielsen, C. Joergensen, A. Kloch, P. B. Hansen, K. E. Stubkjaer, K. Wunstel, K. Daub, E. Lach, G. Laube, W. Idler, M. Schilling, and S. Bouchoule, “40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer,” Electron. Lett. 33, 133-134 (1997).
[CrossRef]

Wang, B. C.

X. Lei, B. C. Wang, V. Baby, I. Glesk, and P. R. Prucnal, “All-optical data format conversion between RZ and NRZ based on a Mach-Zehnder interferometric wavelength converter,” IEEE Photonics Technol. Lett. 15, 308-310 (2003).
[CrossRef]

Webb, R. P.

X. Yang, A. K. Mishra, R. J. Manning, R. P. Webb, and A. D. Ellis, “All-optical 42.6 Gbit/s NRZ to RZ format conversion by cross-phase modulation in single SOA,” Electron. Lett. 43, 890-892 (2007).
[CrossRef]

White, I. H.

Willner, A. E.

D. Norte, E. Park, and A. E. Willner, “All-optical TDM-to-WDM data format conversion in a dynamically reconfigurable WDM network,” IEEE Photonics Technol. Lett. 7, 920-922(1995).
[CrossRef]

Wong, C. S.

C. W. Chow, C. S. Wong, and H. K. Tsang, “All-optical NRZ to RZ format and wavelength converter by dual wavelength injection locking,” Opt. Commun. 209, 329-334 (2002).
[CrossRef]

Wunstel, K.

B. Mikkelsen, M. Vaa, H. N. Poulsen, S. L. Danielsen, C. Joergensen, A. Kloch, P. B. Hansen, K. E. Stubkjaer, K. Wunstel, K. Daub, E. Lach, G. Laube, W. Idler, M. Schilling, and S. Bouchoule, “40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer,” Electron. Lett. 33, 133-134 (1997).
[CrossRef]

Xu, J.

Yang, X.

X. Yang, A. K. Mishra, R. J. Manning, R. P. Webb, and A. D. Ellis, “All-optical 42.6 Gbit/s NRZ to RZ format conversion by cross-phase modulation in single SOA,” Electron. Lett. 43, 890-892 (2007).
[CrossRef]

Yao, J. P.

S. L. Pan and J. P. Yao, “Optical NRZ to RZ format conversion based on a frequency-doubling optoelectronic oscillator,” in Lasers and Electro-Optics Society Annual Meeting Conference Proceedings, 2009 (IEEE, 2009), paper ThU2.

Yu, J.

J. Yu, G. K. Chang, J. Barry, and Y. Su, “40 Gbit/s signal format conversion from NRZ to RZ using a Mach-Zehnder delay interferometer,” Opt. Commun. 248, 419-422 (2005).
[CrossRef]

Yu, Y.

Zhang, X.

Appl. Opt. (1)

Electron. Lett. (2)

B. Mikkelsen, M. Vaa, H. N. Poulsen, S. L. Danielsen, C. Joergensen, A. Kloch, P. B. Hansen, K. E. Stubkjaer, K. Wunstel, K. Daub, E. Lach, G. Laube, W. Idler, M. Schilling, and S. Bouchoule, “40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer,” Electron. Lett. 33, 133-134 (1997).
[CrossRef]

X. Yang, A. K. Mishra, R. J. Manning, R. P. Webb, and A. D. Ellis, “All-optical 42.6 Gbit/s NRZ to RZ format conversion by cross-phase modulation in single SOA,” Electron. Lett. 43, 890-892 (2007).
[CrossRef]

IEEE J. Sel. Top. Quantum Electron. (2)

C. H. Kwok and C. Lin, “Polarization-insensitive all-optical NRZ-to-RZ format conversion by spectral filtering of a cross phase modulation broadened signal spectrum,” IEEE J. Sel. Top. Quantum Electron. 12, 451-458 (2006).
[CrossRef]

M. Doi, M. Sugiyama, K. Tanaka, and M. Kawai, “Advanced LiNbO3 optical modulators for broadband optical communications,” IEEE J. Sel. Top. Quantum Electron. 12, 745-750(2006).
[CrossRef]

IEEE Photonics Technol. Lett. (3)

X. Lei, B. C. Wang, V. Baby, I. Glesk, and P. R. Prucnal, “All-optical data format conversion between RZ and NRZ based on a Mach-Zehnder interferometric wavelength converter,” IEEE Photonics Technol. Lett. 15, 308-310 (2003).
[CrossRef]

L. Huo, Y. Dong, C. Y. Lou, and Y. Z. Gao, “Clock extraction using an optoelectronic oscillator from high-speed NRZ signal and NRZ-to-RZ format transformation,” IEEE Photonics Technol. Lett. 15, 981-983 (2003).
[CrossRef]

D. Norte, E. Park, and A. E. Willner, “All-optical TDM-to-WDM data format conversion in a dynamically reconfigurable WDM network,” IEEE Photonics Technol. Lett. 7, 920-922(1995).
[CrossRef]

J. Lightwave Technol. (1)

Opt. Commun. (2)

J. Yu, G. K. Chang, J. Barry, and Y. Su, “40 Gbit/s signal format conversion from NRZ to RZ using a Mach-Zehnder delay interferometer,” Opt. Commun. 248, 419-422 (2005).
[CrossRef]

C. W. Chow, C. S. Wong, and H. K. Tsang, “All-optical NRZ to RZ format and wavelength converter by dual wavelength injection locking,” Opt. Commun. 209, 329-334 (2002).
[CrossRef]

Opt. Express (3)

Other (1)

S. L. Pan and J. P. Yao, “Optical NRZ to RZ format conversion based on a frequency-doubling optoelectronic oscillator,” in Lasers and Electro-Optics Society Annual Meeting Conference Proceedings, 2009 (IEEE, 2009), paper ThU2.

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Figures (7)

Fig. 1
Fig. 1

Experimental setup.

Fig. 2
Fig. 2

Waveforms and eye diagrams of the NRZ signal before conversion and the RZ signal after conversion.

Fig. 3
Fig. 3

Optical spectrum of the converted RZ signal (solid curve) and a typical transmission curve of the DI (dashed curve).

Fig. 4
Fig. 4

(a), (c) Waveforms of the optical pulses and (b), (d)  eye diagrams of the converted signals at 20 and 40 Gb / s . Time scale: (a), (b)  20 ps / div ; (c), (d)  10 ps / div .

Fig. 5
Fig. 5

BER curves and eye diagrams of the converted signals when the time delay of the DI is (a) 10.2, (b) 15, and (c)  19.7 ps .

Fig. 6
Fig. 6

BER curves and eye diagrams of the converted signals when the pulses have different average power of (a) 3, (b) 5, (c) 7, and (d)  6 dBm .

Fig. 7
Fig. 7

BER curves and eye diagrams of converted RZ signals before and after transmission over an 80 km dispersion-managed fiber link.

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