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Optical Engineering

High-quality frequency-locked optical frequency comb source for terabits optical communication system
Author(s): Jiachuan Lin; Lixia Xi; Jianping Li; Jianrui Li; Xianfeng Tang; Lu Sun; Xiaoguang Zhang
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Paper Abstract

A comprehensive investigation is done on a high-quality frequency comb or multicarrier generation using a single-sideband modulation based recirculating frequency shifter (SSB-RFS), which has shown a good capability to provide a large number of frequency-locked carriers for terabits transmission. The dominant factors, such as I/Q modulator, direct current-bias, radio-frequency signal, and band pass filter, are analyzed theoretically and experimentally in terms of the metrics such as flatness, signal-to-noise ratio, and stability. The achieved 69 flat tones by noise suppressed SSB-RFS are presented. An example of SSB-RFS based 2.56  Tb/s PDM-RZ-16QAM 792 km transmission is illustrated, which is enabled by the 20 high-quality carrier tones generated with the optimally operated SSB-RFS source.

Paper Details

Date Published: 18 September 2014
PDF: 10 pages
Opt. Eng. 53(12) 122608 doi: 10.1117/1.OE.53.12.122608
Published in: Optical Engineering Volume 53, Issue 12
Show Author Affiliations
Jiachuan Lin, Beijing Univ. of Posts and Telecommunications (China)
Lixia Xi, Beijing Univ. of Posts and Telecommunications (China)
Jianping Li, Jinan Univ. (China)
Jianrui Li, Beijing Univ. of Posts and Telecommunications (China)
Xianfeng Tang, Beijing Univ. of Posts and Telecommunications (China)
Lu Sun, Beijing Univ. of Posts and Telecommunications (China)
Xiaoguang Zhang, Beijing Univ. of Posts and Telecommunications (China)


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