光通信デバイスを利用した酸素ガス計測システムの開発

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2014/11/01

タイトル(英語): Oxygen Measurement System using Optical Communication Devices

著者名: 由井　四海（富山高等専門学校 電子情報工学科），水本　巌（富山高等専門学校 電子情報工学科），久世　宏明（千葉大学 環境リモートセンシング研究センター）

著者名(英語): Yotsumi Yoshii (Department of Electronics and Computer Engineering, Toyama National College of Technology), Iwao Mizumoto (Department of Electronics and Computer Engineering, Toyama National College of Technology), Hiroaki Kuze (Center for Environmental Remote Sensing, Chiba University)

キーワード: 光通信デバイス，ガス計測，レーザー分光法，非線形結晶素子，直接吸収法，波長変調法　　optical telecommunication device，gas detection，laser spectroscopy，nonlinear optics device，direct absorption，wavelength modulation

要約(英語): Concentration measurement of oxygen gas is required for better monitoring and control of various types of combustion systems. As compared with conventional zirconia oxygen sensors, tunable diode laser absorption spectroscopy can provide faster response, with smaller interference of inflammable gases. In this paper we report the concentration measurement of oxygen molecules using the absorption band (A-band) of 760 nm wavelength. A periodically poled LiNbO3 crystal (PPLN) is employed for the frequency doubling of 1520 nm light from a distributed feedback laser, resulting in the 760 nm output power of 1.8 mW. The wavelength modulation spectroscopy with dual beam configuration enables the cancellation of the common mode noise from diode laser as well as excess etalon noise that arises from optical paths including the PPLN module. With the cell length of 200 mm, the absorption measurement using the R11Q12 line at 760.445 nm has led to a minimum detectable absorbance of 3.7×10-4 m-1. A dynamic response faster than 1 s was seen when the oxygen concentration was changed between 0% and 24% while the laser wavelength was fixed at the absorption peak.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.134 No.11 （2014） 特集Ⅰ：電気関係学会関西連合大会　特集Ⅱ：国際会議ヒューマナイズド　システム2013

本誌掲載ページ: 1703-1707 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/134/11/134_1703/_article/-char/ja/