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. 1987 May 1;26(9):1603-6.
doi: 10.1364/AO.26.001603.

New measurement system for fault location in optical waveguide devices based on an interferometric technique

K Takada, I Yokohama, K Chida, J Noda

New measurement system for fault location in optical waveguide devices based on an interferometric technique

K Takada et al. Appl Opt. .

Abstract

A new measurement system for fault location in optical waveguide devices is presented. The system consists of a fiber-optic Mach-Zehnder and a bulk-type Michelson interferometers. The spatial resolution of the scatter distribution is <380 microm, which is limited by the averaging time. The minimum detectable backscattered power is -116 dB relative to the light power propagating in the waveguides. Preliminary experimental results using single-mode fibers <10 cm long are demonstrated.

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