Wavelength Lock System Using a Quartz Etalon Supported at the Middle Point

Shigeru OHSHIMA  Masahiro OGUSU  Kazuhiko IDE  

IEICE TRANSACTIONS on Communications   Vol.E88-B   No.4   pp.1523-1530
Publication Date: 2005/04/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.4.1523
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Fiber-Optic Transmission for Communications
wavelength division multiplexing,  frequency stability,  frequency locked loops,  Fabry-Perot resonators,  quartz,  cavities,  modulation,  

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This paper presents a wavelength lock system using a Z-cut quartz etalon supported at the middle point. The Z-cut quartz etalon possesses the cavity length modulation and the low temperature coefficient. We propose a Z-cut quartz etalon supported at the middle point in order to improve the modulation index and response time. The mechanism of the center supported Z-cut quartz etalon is described. We also show that the etalon possesses a high modulation index, a high Q factor, and a rapid response time in experimental results. A self-tuning dither oscillator realized by using quartz etalon is also described.