Optical device with a laser-to-fiber coupler

Details Optical device with a laser-to-fiber coupler Optical device with a laser-to-fiber coupler

1977-11-08

1980-04-22

Levy, Stewart J.

350 9618, 350 9620, G02B 514

Patent

active

041992229

ABSTRACT:
A laser-to-fiber coupler is constructed by an optical waveguide arranged between a semiconductor laser and a transmitting optical fiber through which an optical beam emanating from the laser is transmitted in order to reduce the amount of a reflection beam from the optical fiber, which is injected into the active layer of the semiconductor laser.
The waveguide is made by an optical fiber of which at least one of core radius or numerical aperture (N.A.) is smaller than those of the transmitting optical fiber.

REFERENCES:
patent: 2506672 (1950-05-01), Kell
patent: 3756688 (1973-09-01), Hudson et al.
patent: 3779628 (1973-12-01), Kapron et al.
patent: 3809455 (1974-05-01), Pekau et al.
patent: 3894789 (1975-07-01), Kobayashi et al.
patent: 3950075 (1976-04-01), Cook et al.
patent: 4065203 (1977-12-01), Goell et al.
patent: 4076375 (1978-02-01), Muska et al.
Dyott, "Direct Coupling from a GaAs Laser into a Single-Mode Fiber", Electronics Letters, Jul. 1975, vol. 11, No. 14.

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