Optoelectronics Letters, Volume. 9, Issue 3, 229(2013)
A novel chromatic dispersion monitoring technique for 16/64-QAM system based on asynchronous amplitude histogram
A novel chromatic dispersion (CD) monitoring technique based on asynchronous amplitude histogram (AAH) for higher order modulation formats is proposed in this paper. Without demodulating the signal, in the monitoring scheme, the received signal is sampled asynchronously, and thus clock information and high-speed sampling units are unnecessary, resulting in low cost and high reliability. Simulations of CD monitoring technique for non-return-to-zero/]return- to-zero (NRZ/RZ) 16- and 64-quadrature amplitude modulation (QAM) systems with different optical signal-tonoise ratios (OSNRs) and duty cycles are investigated, and the tolerance of the scheme is also discussed. Simulation results show that the presented CD monitoring technique with high sensitivity can be applied to monitor the residual CD of a transmission link in the next-generation optical networks.
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YAN Li-juan, ZHU Bo, LIU Guo-qing, HU Fang-ren. A novel chromatic dispersion monitoring technique for 16/64-QAM system based on asynchronous amplitude histogram[J]. Optoelectronics Letters, 2013, 9(3): 229
Received: Jan. 30, 2013
Accepted: --
Published Online: Oct. 12, 2017
The Author Email: Bo ZHU (zhub@njupt.edu.cn)