Coupling-extracting device for optical signal

Details Coupling-extracting device for optical signal Coupling-extracting device for optical signal

1982-04-28

1985-10-01

Sikes, William L.

350 9618, 35016223, 350612, G02B 514, G02B 510, G02B 518

Patent

active

045442320

ABSTRACT:
Coupling-extracting device for an optical signal between an upstream fibre and a downstream fibre, with continuity of the signal from upstream to downstream and at the same time extraction of part of the signal to a detector and re-injection from an emitter.
It comprises an entirely reflecting system placed only in the central part of the beam between the upstream fibre and downstream fibre. The same system is used to divert towards the downstream fibre the light coming from the emitter and to prevent the direct passage of light from the emitter to the detector.

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patent: 4257673 (1981-03-01), Matthijsse
patent: 4280751 (1981-07-01), DiVita
patent: 4329017 (1982-05-01), Kapany et al.
patent: 4381137 (1983-04-01), Berg et al.
patent: 4479697 (1984-10-01), Kapany et al.
patent: 4484793 (1984-11-01), Laude

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