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Phase-noise-insensitive coherent optical heterodyne CPFSK receiver with limiter-discriminator detector

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2 Author(s)
Xiupu Zhang ; Dept. of Radio Eng., Beijing Univ. of Posts & Telecommun., China ; Peixuan Jiang

A coherent optical heterodyne CPFSK receiver with a limiter-discriminator (LD) detector, which cannot be degraded by quantum phase noise of lasers when the frequency deviation ratio h is equal to 1, is proposed. The receiver can give the same bit error rate as the ideal digital DPSK system. In addition, 1/2 exp (-SNR) can be considered as the upper bound of the minimum error rate of the CPFSK-LD detector.<>

Published in:

IEEE Photonics Technology Letters  (Volume:3 ,  Issue: 6 )