Performance Enhancement of Multiwavelength Conversion of RZ-DPSK Based on Four-Wave Mixing in Semiconductor Optical Amplifier

In this letter, we propose two methods to enhance the performance of multichannel wavelength conversion of return-to-zero differential phase-shift-keying signal in a semiconductor optical amplifier (SOA) based on four-wave-mixing effect. The first one is optimizing the relative time delay of the multichannel signal to reduce the crosstalk-induced penalty in SOA. The second one is using the synchronous clock pumping to raise the power of converted signal. The experiment on wavelength conversion of two channels at 10-Gb/s signal showed the power penalty was improved more than 1 dB in the first method and about 1.5 dB in the second method.

[1]  Toshio Morioka,et al.  Widely tunable multichannel wavelength conversion using multiple wavelength quasi-phase-matched LiNbO/sub 3/ waveguide , 2004 .

[2]  Steve Madden,et al.  Tunability of polarization-insensitive wavelength converters based on four-wave mixing in semiconductor optical amplifiers , 1998 .

[3]  M. Fejer,et al.  Multiple-channel wavelength conversion by use of engineered quasi-phase-matching structures in LiNbO(3) waveguides. , 1999, Optics letters.

[4]  S. Yoo.  Wavelength conversion technologies for WDM network applications , 1996 .

[5]  Shizhuo Yin,et al.  Wavelength tuning range enhanced single resonant band fiber filter using a long period grating (LPG) with ultra thin cladding layer , 2000, Optical Fiber Communication Conference. Technical Digest Postconference Edition. Trends in Optics and Photonics Vol.37 (IEEE Cat. No. 00CH37079).

[6]  P. Kumar,et al.  Multichannel wavelength conversion of DPSK signals using four-wave mixing in highly-nonlinear fiber without crossgainmodulation penalty , 2005, (CLEO). Conference on Lasers and Electro-Optics, 2005..

[7]  S. J. B. Yoo,et al.  Polarization-independent, multichannel wavelength conversion by difference frequency generation in quasi-phase-matched AlGaAs waveguides , 1996, Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference.

[8]  Chao Lu,et al.  Cascaded all-optical wavelength conversion for RZ-DPSK signal based on four-wave mixing in semiconductor optical amplifier , 2004 .

[9]  G. Kalogerakis,et al.  Multiple wavelength conversion with gain by high repetition-rate pulsed-pump fiber OPA , 2005, OFC/NFOEC Technical Digest. Optical Fiber Communication Conference, 2005..

[10]  J.P.R. Lacey,et al.  Four-channel polarization-insensitive optically transparent wavelength converter , 1997, IEEE Photonics Technology Letters.

[11]  Christophe Gosset,et al.  Multi-wavelength conversion and resynchronization of wavelength division multiplexed signals by use of four-wave mixing in a semiconductor optical amplifier , 2002, Optical Fiber Communication Conference and Exhibit.

[12]  Chao Lu,et al.  Cascade of all-optical wavelength conversion for RZ-DPSK format using four wave mixing in SOA , 2004, Optical Fiber Communication Conference, 2004. OFC 2004.