[6] BIRK M, GERARD P, CURTO R, et al. Field trial of a real-time, single wavelength, coherent 100 Gbit/s PM-QPSK channel upgrade of an installed 1800km link[C]//IEEE. Proceedings of Optical Fiber Communication/Na-tional Fiber Optic Engineers Conference, San Diego: IEEE, 2010: PDFD1-1-PDFD1-3.
[8] ANDREAS L, NORIAKI K, CHEN Y, et al. A real-time CMA-based 10 Gb/s polarization demultiplexing coherent receiver implemented in an FPGA[C]//IEEE. Proceedings of Optical Fiber Communication/National Fiber Optic Engineers Conference, San Diego: IEEE, 2008: OTuO2-1-OTuO2-3.
[9] KANDEA N, LEVEN A. Coherent polarization-division-multiplexed QPSK receiver with fractionally spaced CMA for PMD compensation[J]. IEEE Photon. Tech. Lett., 2009, 21(4): 203-205.
[10] FARUK M. Modified CMA based blind equalization and carrier-phase recovery in PDM-QPSK coherent optical receivers[C]//IEEE. Proceedings of16th Int’l Conf. Computer and Information Technology. Khulna: IEEE, 2013: 469-472.
[13] POOLE C, NAGEL J. Optical fiber telecommunications III[M]. San Diego: Academic Press, 1997.
[14] KOGELNIK H, JOPSON R, NELSON L. Optical fiber telecommuni-cations IV [M]. San Diego: Academic Press, 2002.
