Noise cancellation in distributed feedback laser based interrogation system for twin grating accelerometer

In this paper, we demonstrate a noise cancellation method for suppressing laser frequency noise in distributed feedback laser based system for interrogating a twin fiber Bragg grating based accelerometer. A simple method has been developed by studying the noise characteristics of the sensing photodi...

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Bibliographic Details
Published in:	Physica scripta Vol. 98; no. 10; pp. 105509 - 105517
Main Authors:	Basumallick, Nandini, Mitra, Rajarshi, Chattopadhyay, Somadrita, Kumar, Dipten, Biswas, Palas, Bandyopadhyay, Somnath
Format:	Journal Article
Language:	English
Published:	IOP Publishing 01-10-2023
Subjects:	accelerometer distributed feedback laser fiber Bragg grating noise cancellation
Online Access:	Get full text
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Summary:	In this paper, we demonstrate a noise cancellation method for suppressing laser frequency noise in distributed feedback laser based system for interrogating a twin fiber Bragg grating based accelerometer. A simple method has been developed by studying the noise characteristics of the sensing photodiode and the reference photodiode, used in standard intensity based wavelength demodulation system. Proposed method could be able to reduce deterministic noise components to about 20% of the original noise components without using any complex feedback mechanism to stabilize the laser.
Bibliography:	PHYSSCR-123798.R1
ISSN:	0031-8949 1402-4896
DOI:	10.1088/1402-4896/acf4cb