Optical data transmission apparatus

Details Optical data transmission apparatus Optical data transmission apparatus

1998-03-11

1999-12-14

Palmer, Phan T. H.

Optical waveguides

With optical coupler

Plural

385 28, 385 32, 385 36, G02B 628

Patent

active

060028211

ABSTRACT:
An optical transmitting/receiving apparatus comprises a laser and an optical detector. The optical transmitting/receiving apparatus is connected to an optical fiber by a coupling mechanism in such a way that the optical fiber can be connected and disconnected to and from the optical transmitting/receiving apparatus with a high degree of freedom. An optical signal transmitted by the laser is supplied to the optical fiber. On the other hand, an inputting optical signal received through the optical fiber and a loopback optical signal are supplied to the optical detector. A signal output by the optical detector is supplied to a receiving circuit. When a self-diagnosis of the optical transmitting/receiving apparatus is carried out, the optical fiber is disconnected from the optical transmitting/receiving apparatus. In the self-diagnosis, a loopback control circuit generates a driving circuit control signal in accordance with a loopback control signal. The driving circuit control signal is supplied to a driving circuit for driving the laser in order to adjust the optical signal output by the laser.

REFERENCES:
patent: 5715339 (1998-02-01), Takai et al.

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