Coherent reflectometer

Details Coherent reflectometer Coherent reflectometer

G - Physics

01

M

73/58

G01M 11/02 (2006.01) G01M 11/00 (2006.01)

Patent

CA 1219465

COHERENT REFLECTOMETER Abstract of the Disclosure An optical reflectometer in which the output from a laser 11 is passed through a ramped phase modulator 12 and an optical fibre bi-directional coupler 13 to a transmission path 15, e.g. an optical fibre. Part of the light is coupled out to a mirror 14 and is reflected to form a local oscillator signal which is mixed in the coupler with backscattered light from the fibre. The mixed signals are applied to a detector 16.

452032

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