Optical-axis alignment method, optical-axis alignment device, in

Details Optical-axis alignment method, optical-axis alignment device, in Optical-axis alignment method, optical-axis alignment device, in

1996-08-21

1997-09-09

Ngo, John

Optical waveguides

With disengagable mechanical connector

Optical fiber to a nonfiber optical device connector

385 90, 385 91, 385147, 385 35, 359900, G02B 626

Patent

active

056664508

ABSTRACT:
Alignment between an optical fiber and a laser diode is carried out by the steps of fixing a position sensitive detector and an optical fiber on a common supporting device, arranging a position sensitive detector opposite the laser diode, measuring the converging point of the light beams from the laser, calculating the difference between the converging point and the optical fiber, displacing the optical fiber relative to the laser diode by the calculated difference for harmonizing the converging point with the center of the optical fiber within a tolerance, moving minutely the optical fiber with the laser in the direction for increasing the light power emitted from the other end of the optical fiber and fixing the optical fiber at the point which gives the maximum power to the optical fiber.

REFERENCES:
patent: H551 (1988-12-01), Chaoui et al.
patent: 4720163 (1988-01-01), Goodwin et al.
patent: 5029965 (1991-07-01), Tan
patent: 5168321 (1992-12-01), Gregory et al.
patent: 5217906 (1993-06-01), Abbott et al.
patent: 5324954 (1994-06-01), Oikawa
patent: 5367140 (1994-11-01), Jouaneh et al.
Maigne et al, "An InGaAs-InP Position-Sensing Photodetector", IEEE Journal of Quantum Electronics, vol. 26, No. 5, May 1990, pp. 820-823.

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