Optoelectronic device with a coupling between a semiconductor di

Optical waveguides – With disengagable mechanical connector – Structure surrounding optical fiber-to-fiber connection

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385 89, 385 92, 385 93, 385 94, G02B 630

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active

058127151

ABSTRACT:
The invention relates to an optoelectronic device with a module comprising a holder with an amplifier and on either side thereof a lens and a glass fiber which can be aligned relative to the amplifier. The module also comprises two monitor diodes. A disadvantage of the known device is that the lenses cannot be easily aligned relative to the amplifier, and the monitor diodes cannot be easily connected electrically. The use of a spherical lenses also poses a problem. In a device according to the invention, the monitor diodes are so positioned that they are capable of detecting radiation reflected at the outside of the lenses instead of radiation refracted and reflected within the lenses, while the radiation-sensitive surfaces of the monitor diodes are positioned such that they receive more radiation from one lens than from the other lens. This renders it possible to place the monitor diodes on a separate, further holder at some distance away from the amplifier and the lenses, each being aimed at one of the two lenses. This facilitates both the alignment of the lenses relative to the amplifier and the electrical connection of the monitor diodes. The lenses, which now no longer bear on the monitor diodes are also allowed to be a spherical now. Both the operation of the amplifier and the value of the output signal can be monitored very well in this manner. The further holder preferably has a T-shape with a wedge end on which the monitor diodes are present and which is immediately above the amplifier. The device according to the invention can be very compact. The angle of the wedge portion preferably lies between 45.degree. and 90.degree..

REFERENCES:
patent: 4944569 (1990-07-01), Boudreu et al.
patent: 4983009 (1991-01-01), Musk
patent: 5408559 (1995-04-01), Takahashi et al.
patent: 5487124 (1996-01-01), Bowen et al.
patent: 5579426 (1996-11-01), Li et al.

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