Phase Noise Characterization of SGDBR Lasers Using Phase Modulation Detection Method With Delayed Self-Heterodyne Measurements

被引：73
|
作者：
Huynh, Tam N. [1 ]
Lim Nguyen [2 ]
Barry, Liam P. [1 ]
机构：
[1] Dublin City Univ, Sch Elect Engn, Rince Inst, Dublin 9, Ireland
[2] Univ Nebraska, Dept Comp & Elect Engn, Lincoln, NE 68588 USA
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 2013年 / 31卷 / 08期
基金：
爱尔兰科学基金会;
关键词：
Delayed self-heterodyne method; linewidth; phase modulation detection; phase noise measurement; BIT-ERROR RATE; TUNABLE LASER; LINEWIDTH; PERFORMANCE;
D O I：
10.1109/JLT.2013.2247564
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：
This study employed the coherent phase modulation (PM) detection method to characterize the phase noise of a Sampled-Grating Distributed Bragg Reflector (SGDBR) laser via delayed self-heterodyne (DSH) measurements. We derived the formula for phase-error variance from the FM noise spectrum of the laser and performed measurements on the Distributed Feedback (DFB) and SGDBR lasers. The results confirmed that the DFB laser phase noise is well described by white FM noise while the SGDBR laser has additional frequency fluctuations below 400 MHz. The measurement and simulation results also demonstrated that the low frequency excess noise significantly broadens the linewidth of SGDBR lasers and can degrade the performance of coherent optical communication systems.
引用
收藏
页码：1300 / 1308
页数：9
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