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Large-scale remotely pumped and interrogated fiber-optic interferometric sensor array

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9 Author(s)
Cranch, G.A. ; Naval Res. Lab., Washington, DC, USA ; Kirkendall, C.K. ; Daley, K. ; Motley, S.
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We report a demonstration of a large-scale remotely interrogated remotely pumped fiber-optic, interferometric sensor array. The system is designed primarily for underwater acoustic applications where each sensor is configured as a hydrophone and a large number of sensors (i.e., up to /spl sim/500) are required to be interrogated through link lengths of several tens of kilometers. A system comprising of 96 sensors combined using time and dense wavelength-division multiplexing and interrogated through a 40-km fiber link is demonstrated. A remotely pumped erbium-doped fiber amplifier is incorporated into the array to increase the distance between the array and interrogation electronics. We describe the performance of our system and validate a previously published model.

Published in:

Photonics Technology Letters, IEEE  (Volume:15 ,  Issue: 11 )

Date of Publication:

Nov. 2003

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