Optoelectric connection device

Details Optoelectric connection device Optoelectric connection device

1985-12-17

1989-01-17

Lee, John D.

350 9616, G02B 628

Patent

active

047984295

ABSTRACT:
An Optoelectric connection device (3a) for coupling transmission (28) and reception units (4) to a line (2) for optical information transmission. The device includes a plate (11) of optoelectric material having two directional couplers (12,13) connectable to the line (2) and a modulating directional coupler (14). A signal at the input (18,18a) for the line is cross-coupled in the first coupler (13) to the reception unit (4). A lightwave from the source (28) is modulated in the modulator (14) to form an output signal, which is cross coupled in the second coupler (12) to the output (23,23a) for the line. If the directional couplers (12,13a) are disabled, a signal at the input (18,18a) passes via the couplers directly to the output (23,23a). The connection device has a reserve input (19,19a) and a reserve output (24,24a) which are utilized for fitting the connection device into the line (2) without interrupting signal transmission on the line (2). The device (3a) has negligible cross talk between the input (18,18a) and output (23,23a).

REFERENCES:
patent: 4120560 (1978-10-01), Baues et al.
patent: 4196964 (1980-04-01), Papuchon
Electronics Letters, vol. 12 No. 22, 28th Oct., 1976, R. V. Schmidt & L. L. Buhl "Experimented 4.times.4 Optical Switching Network," pp. 575-577.

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