Optical coupling arrangement

Details Optical coupling arrangement Optical coupling arrangement

1990-06-25

1991-08-13

Healy, Brian

Optical waveguides

With optical coupler

Input/output coupler

25022711, 385 49, G02B 626

Patent

active

050391917

ABSTRACT:
An optical coupling arrangement comprising: an optical laser emitter (4); an optical fiber (8); mounting means (10, 12, 14) for mounting the laser relative to the optical fiber so as to couple into the optical fiber light emitted by the laser; sensing means (11, 18, 24) for sensing the level of a predetermined proportion of light in the optical fiber; and piezoelectric moving means (10, 14) for moving the laser in orthogonal directions responsive to the sensing means so as to the increase coupling into the optical fiber of light emitted by the laser. The sensing means and the piezoelectric moving means thus form a closed, auto-alignment feedback loop which moves the laser relative to the optical fiber so as to compensate for movement between the laser and the optical fiber, thereby ensuring maximum coupling efficiency between the laser and the optical fiber.

REFERENCES:
patent: 3625589 (1971-12-01), Snitzer
patent: 4215937 (1980-08-01), Borsuk
patent: 4668044 (1987-05-01), D'Auria et al.
patent: 4728787 (1988-03-01), Henry et al.
patent: 4966433 (1990-10-01), Blonder
patent: 4978190 (1990-12-01), Veith
patent: 4979787 (1990-12-01), Lichtenberger

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