Publication IEICE TRANSACTIONS on CommunicationsVol.E75-BNo.4pp.275-280 Publication Date: 1992/04/25 Online ISSN: DOI: Print ISSN: 0916-8516 Type of Manuscript: Special Section PAPER (Special Issue on Advanced Optical Communication Technologies for New Applications) Category: Keyword: optical communications, lasers, frequency stabilization, HCN,
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Summary: A frame-installed lightwave synthesizer is constructed for optical frequency-division-multiplexing (FDM) communication. The synthesizer consists of two DFB diode lasers, electrical feedback loops, and an HCN gas cell used as a frequency reference at v0=192,843GHz (1.55459µm in wave-length). Output frequency can be stabilized at anywhere within v0(220) GHz. The beat note observed between the synthesizer and another HCN-stabilized DFB laser is constant within 2MHz over 100 hours. Frequency stability better than 410-10 (80kHz, without normalization) is obtained for an averaging time of 200s.