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Proceedings Paper

Noise Aliasing In Interferometric Sensors Utilizing Phase-Generated Carrier Demodulation
Author(s): T. A. Berkoff; A. D. Kersey; A. Dandridge
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Paper Abstract

We show that high frequency phase-noise is frequency translated to the baseband in interferometric sensors using phase-generated carrier (PGC) demodulation. Under normal circumstances, this excess noise does not contribute significantly to the true low frequency phase-noise arising due to 1/f laser frequency jitter. However, when a phase noise stabilized laser is used, degradation in phase sensitivity of an interferometer can occur using PGC demodulation when compared with direct homodyne detection. The origins and nature of this noise are discussed, and experimental verification of the effect presented.

Paper Details

Date Published: 13 February 1990
PDF: 9 pages
Proc. SPIE 1169, Fiber Optic and Laser Sensors VII, (13 February 1990); doi: 10.1117/12.963020
Show Author Affiliations
T. A. Berkoff, Naval Research Laboratory (United States)
A. D. Kersey, Naval Research Laboratory (United States)
A. Dandridge, Naval Research Laboratory (United States)

Published in SPIE Proceedings Vol. 1169:
Fiber Optic and Laser Sensors VII
Ramon P. DePaula; Eric Udd, Editor(s)

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