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A wavelength readout of a fiber-optic tunable laser using a double-pass Mach-Zehnder Interferometer  

Park, Hyong-Jun (Division of electronics and information engineering, Chonbuk National University)
Kim, Hyun-Jin (Division of electronics and information engineering, Chonbuk National University)
Song, Min-Ho (Division of electronics and information engineering, Chonbuk National University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SC / v.46, no.1, 2009 , pp. 43-48 More about this Journal
Abstract
We constructed a simple wavelength readout system for a tunable fiber laser which was used for a fiber Bragg grating sensor array system. A quadrature sampling method was used to demodulate wavelength variations of the tunable laser which consisted of a SOA(semi-conductor optical amplifier) and a fiber-optic Fabry-Perot filter. Internal triggers, which have a 90 degree phase period, have been generated by using a double-pass Mach-Zehnder interferometer. From Lissajous plots with quadrature sampled data, a mean phase error of ${\sim}2.51$ mrad was obtained. From the wavelength readout experiments, an accurate and fast linear wavelength demodulation has been confirmed.
Keywords
fiber laser; Fabry-Perot filter; Mach-Zehnder interferometer; tunable laser; phase modulator;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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