Abstract

We report what we believe to be the first laboratory prototype of a fiber sensor array using multiple low-gain (5 dB) remotely pumped amplifiers in a 10-rung ladder structure. Incorporating amplifiers improves the system noise figure to less than 20 dB, compared with 32 dB in an optimized passive array of the same size. Scalability to more than 300 sensors per fiber pair while a high dynamic range $(1 \mathit{\mu }\mathrm{rad}/$ sensitivity) is maintained is demonstrated.

© 1997 Optical Society of America

Phase-sensitivity measurement of a 10-sensor array with erbium-doped fiber amplifier telemetry

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