[1] R. A. Linke,A. H. Gnauck. High capacity coherent lightwave systems [J]. J. Lightwave Technol.,1988,6(11):1750-1769
[2] E. A. Swanson,J. C. Livas,R. S. Bondurant. High sensitivity optically preamplified direct detection DPSK receiver with active delay-line stabilization [J]. IEEE Photon. Technol. Lett.,1994,6(2):263-265
[5] A. H. Gnauck,P. J. Winer. Optical phase-shift-keyed transmission [J]. J. Lightwave Technol.,2005,23(1):115-130
[6] S. S. Camatel,V. Ferrero,R. Gaudino et al.. Optical phase locked loop for coherent detection optical receiver[J]. Electron. Lett.,2004,40(6):384-385
[7] L. Li,Z. Tao,T. Hoshida et al.. Rasmussen. Carrier synchronization in 43Gbit/s coherent QPSK receiver [C]. OECC,2007,12B1-3
[8] D. S.Ly-Gagnon,S. Tsukarnoto,K. Katoh et al.. Coherent detection of optical quadrature phase-shift keying signals with carrier phase estimation [J]. J. Lightwave Technol.,2006,24(1):12-21
[9] Z. Tao,H. Zhang,A. Isomura et al.. Simple,Robust,and wide-range frequency offset monitor for automatic frequency control in cigital coherent receivers [C]. ECOC,2007:354-355
[10] A. J. Viterbi. Nonlinear estimation of PSK-modulated carrier phase with application to burst digital transmission [J]. IEEE Trans. Inform. Theory,1983,29(4):543-551
[11] R. Noe. Phase noise-tolerant synchronous QPSK/BPSK baseband-type intradyne receiver concept with feed forward carrier recovery [J]. J. Lightwave Technol.,2005,23(2):802-808
[12] Andreas Leven,Noriaki Kaneda,Ut-Va Koc et al.. Frequency estimation in intradyne reception [J]. IEEE Photon. Technol. Lett.,2007,19(6):366-368