New micro-optic cell for optical fibre gas sensorswith interferometric noisereduction

31 July 1997

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 33 (16) , 1407-1409
https://doi.org/10.1049/el:19970951

Abstract

A novel design of a micro-optic cell employing inexpensive optics is demonstrated for reducing interferometric noise in optical fibre gas sensors. Compared with the traditional collimating cell, the insertion loss is significantly reduced and the overall signal-to-interferometric-noise ratio is improved by a factor of five in a methane sensor using second harmonic signal detection.

Keywords

MICRO-OPTIC CELL
INSERTION LOSS
INTERFEROMETRIC NOISE REDUCTION
METHANE SENSOR
SECOND HARMONIC SIGNAL DETECTION
OPTICAL FIBRE GAS SENSORS

This publication has 1 reference indexed in Scilit:

Signal-to-noise ratio enhancement in frequency-modulation spectrometers by digital signal processing
Optics Letters, 1994