18 September 2014 High-quality frequency-locked optical frequency comb source for terabits optical communication system
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Optical Engineering, 53(12), 122608 (2014). doi:10.1117/1.OE.53.12.122608
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.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Jiachuan Lin, Lixia Xi, Jianping Li, Jianrui Li, Xianfeng Tang, Lu Sun, Xiaoguang Zhang, "High-quality frequency-locked optical frequency comb source for terabits optical communication system," Optical Engineering 53(12), 122608 (18 September 2014). http://dx.doi.org/10.1117/1.OE.53.12.122608
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KEYWORDS
Modulators

Frequency combs

Telecommunications

Optical communications

Polarization

Optical amplifiers

Linear filtering

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