Optical Beat Noise Reduction Using FM to AM Conversion of Injection-Locked FP-Laser Diode in Reflective SOA Based WDM/SCM-Passive Optical Networks

Yong-Yuk WON  Hyuk-Choon KWON  Sang-Kook HAN  

Publication
IEICE TRANSACTIONS on Communications   Vol.E90-B   No.10   pp.2953-2956
Publication Date: 2007/10/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.10.2953
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Fiber-Optic Transmission for Communications
Keyword: 
Fabry-Perot laser,  injection-locking,  optical beat interference,  subcarrier multiplexing,  wavelength division multiplexing,  

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Summary: 
A new scheme for reducing optical beat interference noise in a reflective semiconductor optical amplifier based wavelength division multiplexed/subcarrier multiplexing -- passive optical network is proposed. This method uses an Fabry Perot laser locked by modulated lights from optical network units in a central office. As an experimental verification, it is reported that carrier to noise ratio is enhanced by 10 dB and power penalty is improved by 16 dB.