Small acousto-optic tunable filter using edge-reflection and its application to strain sensing system

Michio Kadota, Hideaki Kobayashi, Kiyokazu Yamada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An acousto-optic tunable filter (AOTF) with surface acoustic wave (SAW) on LiNbO3 was proposed to apply to a wavelength monitor as a simple spectrum analyzer in a fiber-optic strain sensing system using fiber Bragg gratings (FBGs) instead of a conventional expensive optical spectrum analyzer. An usual AOTF was composed of more than 2 chips connected in series, so the AOTF was complex and a little expensive. In this paper, a new AOTF, which is smaller, simpler, and more reasonable than the usual AOTF, has been developed by using a reflection of light at an edge of the chip. Then, this new AOTF has been applied to a strain sensing system instead of an conventional expensive optical spectrum analyzer. As a result, advantages of light weight, small size, reasonable cost, fast response, no mechanical parts, high reliability and high accuracy have been confirmed in the system.

Original languageEnglish
Title of host publication2012 IEEE International Ultrasonics Symposium, IUS 2012
Pages2416-2419
Number of pages4
DOIs
Publication statusPublished - 2012 Dec 1
Event2012 IEEE International Ultrasonics Symposium, IUS 2012 - Dresden, Germany
Duration: 2012 Oct 72012 Oct 10

Publication series

NameIEEE International Ultrasonics Symposium, IUS
ISSN (Print)1948-5719
ISSN (Electronic)1948-5727

Other

Other2012 IEEE International Ultrasonics Symposium, IUS 2012
CountryGermany
CityDresden
Period12/10/712/10/10

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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