Optoelectronic transmit module

Details Optoelectronic transmit module Optoelectronic transmit module

1998-07-09

1999-12-07

Ngo, Hung N.

Optical waveguides

With disengagable mechanical connector

Optical fiber to a nonfiber optical device connector

385 93, G02B 636

Patent

active

059971851

ABSTRACT:
Laser diodes have a driver current which is dependent on aging and temperature. Emitted optical power is detected and adjusted through the use of a monitor element. However, previous transmit modules are suitable only for semiconductor lasers which emit multi-directionally. The inventive optoelectronic transmit module includes a semiconductor laser which emits unidirectionally and a monitor element. Active areas of both components point toward a coupling device. Optical coupling elements in the form of lenses and reflective elements in the form of reflective surfaces are integrated into the coupling device. The configuration of the coupling device is selected to be such that at least part of emitted radiation is passed to the monitor element, but a remaining portion penetrates the coupling device to the coupling element and is injected into or coupled-in by the latter, for example to an optical waveguide. The transmit module is particularly suitable for Vertical Cavity Surface Emitting Laser Diodes.

REFERENCES:
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patent: 5093980 (1992-03-01), Bregman et al.
patent: 5282080 (1994-01-01), Scifres et al.
patent: 5416624 (1995-05-01), Karstensen
patent: 5555334 (1996-09-01), Ohnishi et al.
patent: 5696862 (1997-12-01), Hauser et al.
International Publication No. 97/25638 (Stange et al.), dated Jul. 17, 1997.
Patent Abstracts of Japan No. 59-025282 (Tetsuo), dated Jan. 9, 1984.
Patent Abstracts of Japan No. 53-135652 (Yosuke), dated Nov. 27, 1978.

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