High dynamic range OTDR data acquisition circuit

Details High dynamic range OTDR data acquisition circuit High dynamic range OTDR data acquisition circuit

1993-12-14

1996-01-16

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

G01N 2188

Patent

active

054852641

ABSTRACT:
An OTDR stores data samples in a predetermined sequence in a memory. Data is read from and written to the memory in the predetermined sequence by application of successive control signals. The stored data is read, added to a correlated sample of a new signal and the result stored to maintain the predetermined sequence of samples. Successive tests thus accumulate samples in sequence to provide an indication of the variation of the signal as the light pulse passes along the fiber under tests.

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