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Beat frequency measurement system for multiple dual-polarization fiber DFB lasers

Beat frequency measurement system for multiple dual-polarization fiber DFB lasers
Beat frequency measurement system for multiple dual-polarization fiber DFB lasers
This paper describes the design and testing of an electronic system intended to record the beat frequency signal from up to eight serially multiplexed dual polarization fiber distributed feedback lasers. The beat frequency from each laser is first mixed down to around 70 MHz and then measured using a PC based counter system. The gate frequency and, hence, the sampling rate, is designed to be around 1 kHz, and the frequency resolution of the system is found to be equal to the gate frequency. The system has been used to measure the beat frequency variation of fiber lasers due to either rapidly varying temperature or flexing motion. Measurements made with multiple fiber laser sensors show that the crosstalk between different sensors is very low.
1530-437X
115-120
Crickmore, R.I.
27ebd1d6-e7f7-407c-a129-ff6626e59264
Gunning, M.J.
f794096b-506a-46e1-91ae-3eb905b5b56b
Stefanov, J.
a9db060b-d8a8-4d31-b141-2dedb0cf6e0d
Dakin, J.P.
04891b9b-5fb5-4245-879e-9e7361adf904
Crickmore, R.I.
27ebd1d6-e7f7-407c-a129-ff6626e59264
Gunning, M.J.
f794096b-506a-46e1-91ae-3eb905b5b56b
Stefanov, J.
a9db060b-d8a8-4d31-b141-2dedb0cf6e0d
Dakin, J.P.
04891b9b-5fb5-4245-879e-9e7361adf904

Crickmore, R.I., Gunning, M.J., Stefanov, J. and Dakin, J.P. (2003) Beat frequency measurement system for multiple dual-polarization fiber DFB lasers. IEEE Sensors Journal, 3 (1), 115-120. (doi:10.1109/JSEN.2003.810095).

Record type: Article

Abstract

This paper describes the design and testing of an electronic system intended to record the beat frequency signal from up to eight serially multiplexed dual polarization fiber distributed feedback lasers. The beat frequency from each laser is first mixed down to around 70 MHz and then measured using a PC based counter system. The gate frequency and, hence, the sampling rate, is designed to be around 1 kHz, and the frequency resolution of the system is found to be equal to the gate frequency. The system has been used to measure the beat frequency variation of fiber lasers due to either rapidly varying temperature or flexing motion. Measurements made with multiple fiber laser sensors show that the crosstalk between different sensors is very low.

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Published date: 2003

Identifiers

Local EPrints ID: 13895
URI: https://eprints.soton.ac.uk/id/eprint/13895
ISSN: 1530-437X
PURE UUID: 6f48aedb-c9ac-4e17-9840-6508f0cd4496

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Date deposited: 08 Feb 2005
Last modified: 19 Jul 2019 19:19

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Contributors

Author: R.I. Crickmore
Author: M.J. Gunning
Author: J. Stefanov
Author: J.P. Dakin

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