Receptacle-type optical transmission/reception apparatus

Details Receptacle-type optical transmission/reception apparatus Receptacle-type optical transmission/reception apparatus

1997-06-19

2000-03-21

Mullen, Thomas

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

372 6, 385 92, 385 34, H04B 1000

Patent

active

060409347

ABSTRACT:
A receptacle-type optical module has a semiconductor laser device, and a glass rod arranged to be contacted tightly with an optical fiber ferrule to guide light emitted from the semiconductor laser device to an optical fiber. A marker is formed on the physical contact face of the glass rod to position the optical axis of the semiconductor laser device. The semiconductor laser device is caused to emit light, and at the same time, the marker image on the physical contact face and the image of the light emitted from the semiconductor laser device are picked up with an infrared camera and subjected to two-dimensional image processing by an image processing unit, thereby detecting the positional shift of the semiconductor laser device from the desired position. A fine adjustment stage is driven in the direction perpendicular to the optical axis of the semiconductor laser device on the basis of the information of the positional shift to position the semiconductor laser device.

REFERENCES:
patent: 4262362 (1981-04-01), Kiernan et al.
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patent: 5127075 (1992-06-01), Althous et al.
patent: 5315609 (1994-05-01), Tanaka et al.
patent: 5528407 (1996-06-01), Nakata et al.
patent: 5552918 (1996-09-01), Krug et al.
The Transactions of the Institute of Electronics, Information and Communication Engineers, Makoto Shimaoka, et al, "Design of Receptacle Laser Diode Modules with Low Reflection" vol. J77-C-I, No. 11 1994, pp. 695-701.

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