Abstract

A sensor consisting of two fiber-optic interferometers of slightly different sensitivities can offer both high sensitivity and a wide dynamic range when the phase difference between the two interferometer outputs is used to identify the order of the fringe from either interferometer output. This technique is demonstrated with a polarimetric temperature sensor utilizing two different lengths of stress-induced birefringent fibers as sensing elements.

© 1988 Optical Society of America

Dependence of visibility on input polarizsation in interferometric fiber-optic sensors

A. D. Kersey, A. Dandridge, and A. B. Tveten
Opt. Lett. 13(4) 288-290 (1988)

Extended-range fiber polarimetric strain sensor

R. M. Taylor, D. J. Webb, J. D. C. Jones, and D. A. Jackson
Opt. Lett. 12(9) 744-746 (1987)

Nonincremental coherent optical fiber sensor

Mario Martinelli and Letizia De Maria
Opt. Lett. 13(9) 779-781 (1988)

Observation of input-polarization-induced phase noise in interferometric fiber-optic sensors

A. D. Kersey, M. J. Marrone, and A. Dandridge
Opt. Lett. 13(10) 847-849 (1988)

Universal dynamic phase-calibration technique for fiber-optic interferometric sensors and phase modulators

V. S. Sudarshanam and K. Srinivasan
Opt. Lett. 14(22) 1287-1289 (1989)