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 μm, 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.
© 1987 Optical Society of America
Original Manuscript: November 14, 1986
Published: May 1, 1987
Kazumasa Takada, Itaru Yokohama, Kazumori Chida, and Juichi Noda, "New measurement system for fault location in optical waveguide devices based on an interferometric technique," Appl. Opt. 26, 1603-1606 (1987)