Incoherent frequency modulated cw optical reflectometry with centimeter resolution
- 20 March 1990
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 29 (9), 1323-1326
- https://doi.org/10.1364/ao.29.001323
Abstract
An incoherent, frequency modulated continuous wave optical reflectomer is described which utilizes a broadband LiNbO(3) electrooptic modulator and slow photodiode for optical downconversion and detection, and a waveform recorder for digital spectrum analysis of the incoming signal. A two-point resolution of 6.8 cm in fiber is achieved. The dynamic range, defined as the location of the system noise floor relative to the maximum producible signal, is 50-dB optical.Keywords
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