Tolerance to in-band coherent crosstalk of differential phase-shift-keyed signal with balanced detection and FEC

It is found experimentally that the differential phase-shift-keyed (DPSK) signal with balanced detection has /spl sim/6 dB higher tolerance to in-band coherent crosstalk than on-off-keyed (OOK) signal. We attribute the improved crosstalk tolerance of the DPSK signal to its 6-dB lowered peak signal power as compared to the OOK signal for equal bit-error rate in optical signal-to-noise-ratio-limited systems. The impact of signal coherence on the crosstalk tolerance in a 10-Gb/s DPSK system adopting a standard Reed-Solomon forward-error correction is also investigated.

[1]  Xiang Liu,et al.  Numerical simulation of the SPM penalty in a 10-Gb/s RZ-DPSK system , 2003, IEEE Photonics Technology Letters.

[2]  Wanyi Gu,et al.  Coherent and incoherent crosstalk in WDM optical networks , 1999 .

[3]  K. Oda,et al.  Impact of crosstalk in an arrayed-waveguide multiplexer on N/spl times/N optical interconnection , 1996 .

[4]  Alan H. Gnauck.  40-Gb/s RZ-differential phase shift keyed transmission , 2003, OFC 2003 Optical Fiber Communications Conference, 2003..

[5]  S. Chandrasekhar,et al.  Forward error correction performance in the presence of Rayleigh-dominated transmission noise , 2003, IEEE Photonics Technology Letters.

[6]  Xiang Liu,et al.  Increased OSNR gains of forward-error correction in nonlinear optical transmissions , 2003, IEEE Photonics Technology Letters.

[7]  L. Eskildsen,et al.  Performance implications of component crosstalk in transparent lightwave networks , 1994, IEEE Photonics Technology Letters.

[8]  A.E. Willner,et al.  Reduction of coherent crosstalk in WDM add/drop multiplexing nodes by bit pattern misalignment , 1999, IEEE Photonics Technology Letters.

[9]  High tolerance to coherent crosstalk of differential-phase-shift-keying , 2004, Optical Fiber Communication Conference, 2004. OFC 2004.

[10]  Y. Yamada,et al.  Tolerance for optical coherent crosstalk of a novel Manchester-code receiver , 1998, 24th European Conference on Optical Communication. ECOC '98 (IEEE Cat. No.98TH8398).

[11]  Amnon Yariv,et al.  An experimental and theoretical study of the suppression of interferometric noise and distortion in AM optical links by phase dither , 1997 .

[12]  K. Lau,et al.  Interferometric noise reduction in fiber-optic links by superposition of high frequency modulation , 1992 .