Title :
Tolerance to in-band coherent crosstalk of differential phase-shift-keyed signal with balanced detection and FEC
Author :
Liu, Xiang ; Kao, Yuan-Hua ; Movassaghi, Mahan ; Giles, Randy C.
Author_Institution :
Bell Labs., Holmdel, NJ, USA
fDate :
4/1/2004 12:00:00 AM
Abstract :
It is found experimentally that the differential phase-shift-keyed (DPSK) signal with balanced detection has ∼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.
Keywords :
Reed-Solomon codes; crosstalk; differential phase shift keying; error statistics; forward error correction; DPSK; FEC; Reed-Solomon; balanced detection; bit-error rate; differential phase-shift-keyed signal; forward-error correction; in-band coherent crosstalk; optical signal-to-noise-ratio limited systems; signal coherence; Differential quadrature phase shift keying; Optical attenuators; Optical crosstalk; Optical fiber networks; Optical interferometry; Optical receivers; Optical sensors; Optical transmitters; Phase detection; Signal detection;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.824942
