Abstract

The multiplexing and demodulation of interferometric sensors using a time-division/phase-generated carrier approach is described. The scheme uses slightly unbalanced interferometers and laser frequency modulation to effect the interrogation of the sensors, while the time-division multiplexing allows individual sensors to be addressed. Phase sensitivities of $\sim 20\mu \text{rad}/\sqrt{\text{Hz}}$ and cross-talk levels of <−47 dB are demonstrated for a three-sensor network.

© 1987 Optical Society of America

Experimental investigation of an optically amplified time-division-multiplexed polarization-insensitive fiber-optic Michelson interferometric sensor system

Yung-Kuang Chen, Pi-Cheng Law, and Shih-Chu Huang
Appl. Opt. 37(28) 6615-6622 (1998)

Analysis and improvement of dynamic range in a time-division-multiplexing interferometric fiber-optic sensor array

Fei Liu, Min Zhang, Duo Yi, Xiangge He, and Xian Zhou
Opt. Lett. 48(4) 988-991 (2023)

Time-division multiplexing of polarization-insensitive fiber-optic Michelson interferometric sensors

S. C. Huang, W. W. Lin, and M. H. Chen
Opt. Lett. 20(11) 1244-1246 (1995)

Fiber-optic interferometric sensor arrays with freedom from source phase-induced noise

J. L. Brooks, M. Tur, B. Y. Kim, K. A. Fesler, and H. J. Shaw
Opt. Lett. 11(7) 473-475 (1986)

Passive demodulation of miniature fiber-optic-based interferometric sensors using a time-multiplexing technique

J. L. Santos and D.A. Jackson
Opt. Lett. 16(15) 1210-1212 (1991)