Novel spectrum absorption fiber methane sensor with DFBLD

Shutao Wang; Rensheng Che

doi:10.1117/12.569435

14 February 2005 Novel spectrum absorption fiber methane sensor with DFBLD

Shutao Wang, Rensheng Che

Proceedings Volume 5634, Advanced Sensor Systems and Applications II; (2005) https://doi.org/10.1117/12.569435
Event: Photonics Asia, 2004, Beijing, China

Abstract

Methane is the main composition of natural gas and marsh gas. It is an important industrial raw material and combustion gas in daily life. Detecting methane and its concentration in time has utmost important affect on safe operation of industry mine and person safe. Developing methane-detecting system has become an important topic and research direction of gas detecting domain. Through processing weak signal with harmonic detection technique, a multi-point fiber-optic gas sensor system for measuring the concentration of methane is designed based on light absorbing capability of gas, which varies with gas concentration at its characteristic wavelength. DFBLD (Distributed Feedback Laser Diode) in 1300nm waveband is used as illuminant and phase-detecting technology is used to carry out harmonic wave detecting the concentration of methane. Study shows that the accuracy of instrument is 5ppm, accuracy and stability of the sensor can meet practical demands. It can be applied to multi-point measurement at real-time in multiple occasions.

Citation Download Citation

Shutao Wang and Rensheng Che "Novel spectrum absorption fiber methane sensor with DFBLD", Proc. SPIE 5634, Advanced Sensor Systems and Applications II, (14 February 2005); https://doi.org/10.1117/12.569435

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available