Compensation of Laser Frequency Fluctuations and Phase Noise in 16-QAM Coherent Receivers

被引：8
|
作者：
Gianni, Pablo [1 ]
Corral-Briones, Graciela [1 ]
Rodriguez, Carmen [1 ]
Hueda, Mario R. [1 ]
机构：
[1] Univ Nacl Cordoba, Lab Comunicac Digitales, RA-5000 Cordoba, Argentina
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2013年 / 25卷 / 05期
关键词：
Carrier phase estimation; coherent systems; laser; local oscillator; parallel; vibration; CARRIER PHASE;
D O I：
10.1109/LPT.2013.2241050
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Frequency fluctuations caused by mechanical vibrations, power supply noise, and other mechanisms are detrimental to the phase estimator performance in high speed intradyne coherent optical receivers. In this letter, we propose the use of a low-latency parallel digital phase lock loop in combination with common feed-forward carrier phase recovery algorithms in order to compensate both the phase noise and laser frequency fluctuation effects on 16-quadrature amplitude modulation receivers. Numerical results demonstrate the excellent behavior of the proposed two-stage carrier recovery scheme.
引用
收藏
页码：442 / 445
页数：4
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