Differential carrier phase recovery for QPSK optical coherent systems with integrated tunable lasers

被引：17
|
作者：
Fatadin, Irshaad [1 ]
Ives, David [2 ]
Savory, Seb J. [2 ]
机构：
[1] Natl Phys Lab, Teddington TW11 0LW, Middx, England
[2] UCL, Dept Elect & Elect Engn, Opt Networks Grp, London WC1E 7JE, England
来源：
OPTICS EXPRESS | 2013年 / 21卷 / 08期
关键词：
RECEIVERS; NOISE; PSK;
D O I：
10.1364/OE.21.010166
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The performance of a differential carrier phase recovery algorithm is investigated for the quadrature phase shift keying (QPSK) modulation format with an integrated tunable laser. The phase noise of the widely-tunable laser measured using a digital coherent receiver is shown to exhibit significant drift compared to a standard distributed feedback (DFB) laser due to enhanced low frequency noise component. The simulated performance of the differential algorithm is compared to the Viterbi-Viterbi phase estimation at different baud rates using the measured phase noise for the integrated tunable laser. (C) 2013 Optical Society of America
引用
收藏
页码：10166 / 10171
页数：6
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