Bidirectional optical loss measurement

Details Bidirectional optical loss measurement Bidirectional optical loss measurement

2006-09-19

2006-09-19

Nguyen, Tu T. (Department: 2877)

Optics: measuring and testing

For optical fiber or waveguide inspection

Reexamination Certificate

active

07110098

ABSTRACT:
The present invention relates to an apparatus and to a method of measurement of optical loss of a DUT having a first end and a second end, comprising the steps of: coupling an optical signal into the first end of the DUT, measuring the optical power of the optical signal by a first detector, reflecting the optical signal at the second end of the DUT to send back a reflected optical signal into the DUT, measuring a reflected optical power of the reflected optical signal by a second detector, evaluating a two-way optical loss on the basis of measurements of the first and the second detectors.

REFERENCES:
patent: 4838690 (1989-06-01), Buckland et al.
patent: 5187362 (1993-02-01), Keeble
patent: 6381010 (2002-04-01), Piffaretti
patent: 0 926 479 (1999-06-01), None
patent: 56198531 (1981-12-01), None
patent: 57233661 (1982-12-01), None

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