Differential Absorption Fibre-Optic Gas Sensor

Arman Mohebati; Terence A. King

doi:10.1117/12.949312

23 February 1989 Differential Absorption Fibre-Optic Gas Sensor

Arman Mohebati, Terence A. King

Proceedings Volume 1011, Fiber Optic Sensors III; (1989) https://doi.org/10.1117/12.949312
Event: 1988 International Congress on Optical Science and Engineering, 1988, Hamburg, Germany

Abstract

The use of diode lasers in fibre optic gas sensors have been demonstrated and it is shown that instrumental drifts can be much reduced or totally eliminated to provide noise limited accuracy. The sensitivities obtained with these diode laser - fibre optic gas sensors are much higher than the sensitivity of the fibre-optic gas sensors utilising broadband radiation sources. The sensors are capable of detecting absorption directly or the photoacoustic signal produced in a resonant cell using a Mach-Zehnder fibre interferometer. For gases with strong absorptions in the near infrared, like HF, ppb level sensitivities have been obtained. Finally the ability of the instrument to make multicomponent gas analysis has been demonstrated.

Citation Download Citation

Arman Mohebati and Terence A. King "Differential Absorption Fibre-Optic Gas Sensor", Proc. SPIE 1011, Fiber Optic Sensors III, (23 February 1989); https://doi.org/10.1117/12.949312

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