Electrically nulled interferometric sensor based on triangular phase modulation

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/28189

Title:	Electrically nulled interferometric sensor based on triangular phase modulation
Authors:	Chien,PY;Chang,YS;Chang,MW
Contributors:	光電科學研究所
Keywords:	FIBER-OPTIC GYROSCOPE;FEEDBACK
Date:	1997
Issue Date:	2010-06-29 19:43:19 (UTC+8)
Publisher:	中央大學
Abstract:	We describe a technique for nulling the optical phase change induced by a fiber interferometric sensor. This scheme utilizes a triangular waveform to modulate an integrated optic phase modulator. The output signal of the interferometer is then mixed with a switching pulse train with proper pulse width and space. The switching pulse trains are generated from a triangular waveform and three comparators with different polarity. The operating principle is demonstrated by using a fiber optic gyroscope (FOG). A sensor system with wide dynamic range and linear scale factor has been successfully implemented by using this technique.
Relation:	OPTICS COMMUNICATIONS
Appears in Collections:	[Graduate Institute of Optics and Photonics] journal & Dissertation

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