Coherent light generators – Particular component circuitry – Optical pumping
Patent
1980-11-28
1983-03-15
Davie, James W.
Coherent light generators
Particular component circuitry
Optical pumping
350 9615, 372 45, H01S 318
Patent
active
043769462
ABSTRACT:
Optical power is coupled into an optical waveguide system such as an optical fiber with maximum efficiency by a superluminescent light-emitting diode having lateral confinement of the light in the junction plane. The waveguide developed in the light-emitting diode is constructed to have an effective numerical aperture equal to the numerical aperture of the optical waveguide, and the refractive index n, the length L and width D of the waveguide in the diode is constructed such that the parameter nD/2L is much less than the numerical aperture. As a result, the inverted population of electrons within the active region are utilized with maximum efficiency to develop rays that are coupled into, and can be guided by, the optical waveguide system.
REFERENCES:
patent: 3958265 (1976-05-01), Charmakadze
patent: 4024559 (1977-05-01), de Cremoux
patent: 4199222 (1980-04-01), Ikushima et al.
Lee et al., "A Stripe-Geometry Double-Heterostructure Amplified-Spontaneous-Emission (Super-Luminescent) Diode", IEEE J. of Quantum Elect., vol. QE-9, No. 8, Aug. 1973, pp. 820-828.
Yang et al., "Calculation of Coupling Losses Between Light Emitting Diodes and Low-Loss Optical Fibers", Applied Optics, vol. 14, No. 2, Feb. 1975, pp. 288-293.
Botez et al., "Channel Waveguide and Planar Edge-Emitting Double Heterojunction (AlGa)As LED's", IBM Research Report, RC 7115 (#30474) May 10, 1978, pp. 1-14.
Boeck et al., "AlGaAs/GaAs Double-Heterostructure Superluminescent Diodes for Optical Transmission Systems", Frequenz, vol. 33, No. 10, 1979, pp. 278-283.
Kaminow Ivan P.
Marcuse Dietrich
Bell Telephone Laboratories Incorporated
Davie James W.
Dubosky Daniel D.
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