Passive laser phase noise suppression technique for fiber interferometers

Alan D. Kersey; Timothy A. Berkoff

doi:10.1117/12.24759

1 February 1991 Passive laser phase noise suppression technique for fiber interferometers

Alan D. Kersey, Timothy A. Berkoff

Proceedings Volume 1367, Fiber Optic and Laser Sensors VIII; (1991) https://doi.org/10.1117/12.24759
Event: SPIE Microelectronic Interconnect and Integrated Processing Symposium, 1990, San Jose, United States

Abstract

A novel passive technique for the suppression of low-frequency phase noise in interferometric fiber sensors is proposed. The technique is based on the cancellation of phase noise in the in-phase and quadrature (sine and cosine) components of the interferometer output prior to final demodulation, using the differentiate and cross-multiply methods. The technique was experimentally demonstrated using both an Nd:YAG source and a diode laser-based system. It is shown that the technique can provide a noise reduction of greater than 40 dB. Results of a laboratory-based simulation of this concept are presented.

Citation Download Citation

Alan D. Kersey and Timothy A. Berkoff "Passive laser phase noise suppression technique for fiber interferometers", Proc. SPIE 1367, Fiber Optic and Laser Sensors VIII, (1 February 1991); https://doi.org/10.1117/12.24759

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