Arrangement for coupling a laser diode and a monomode light wave

Details Arrangement for coupling a laser diode and a monomode light wave Arrangement for coupling a laser diode and a monomode light wave

1987-03-16

1989-03-14

Sikes, William L.

Coherent light generators

Particular component circuitry

Optical pumping

350 9615, 350 9617, 350 9619, 372 6, G02B 726

Patent

active

048120057

ABSTRACT:
An arrangement for coupling a laser diode and a monomode light waveguide, wherein a fine adjustment is particularly simple. The laser diode is a gain-guided diode having an end face coacting with an end face of the optical waveguide to form a coupling location and the arrangement includes a feedback arrangement for conducting a part of the light coupled from the laser diode into the light waveguide back through the waveguide and back into the laser diode. The feedback means comprises either one or more metallized rings having a width of a few light wavelengths being applied on a cylindrical surface of the monomode glass fiber forming the monomode light waveguide at a distance of a few micrometers from the coupling location, one or more notches in the outer surface of the fiber or combination of rings and notches.

REFERENCES:
patent: 3760297 (1973-09-01), Thompson
patent: 3803511 (1974-04-01), Thompson
patent: 4143940 (1979-03-01), Khoe
patent: 4156206 (1979-05-01), Comerford et al.
patent: 4372644 (1983-02-01), Unger
patent: 4427261 (1984-01-01), Khoe et al.
patent: 4594718 (1986-06-01), Scifres et al.
patent: 4601535 (1986-07-01), Tanaka et al.
van Oirschot et al, "Ridged Substrate Internally Diffused Stripe AlGaAs Laser Emitting in the Visible Wavelength Region", Appl. Phys. Lett., vol. 43, No. 9, Nov. 1, 1983, pp. 809-811.
Blauvelt et al, "Narrow Stripe AlGaAs Lasers Using Double Current Confinement", Appl. Phys. Lett., vol. 41, No. 10, Nov. 15, 1982, pp. 903-905.
Krupka et al., IEEE J. of Quantum Electronics, vol. QE-11, No. 7, Jul. 1975, "Transverse Mode Control of Junction Lasers Optically Coupled to Single-Mode Fibers", pp. 503-507.

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