Optical waveguides – With optical coupler – Switch
Patent
1990-06-28
1992-01-14
Lee, John D.
Optical waveguides
With optical coupler
Switch
385 4, 385 5, 385 16, G02B 626
Patent
active
050805045
ABSTRACT:
An apparatus and method for switching unpolarized light are provided. The apparatus includes GaInAs/GaAs optical switching devices which can be fabricated using conventional processes on a single wafer in matrix arrangement to provide an n.times.m cross bar switch. Switching is accomplished by shifting the band gap of the GaInAs material of a device using electrical or optical power to heat the material. Each switching device may comprise two-polarity (n/p) or single polarity (n or p) semiconductor materials.
REFERENCES:
patent: 4773721 (1988-09-01), Erman et al.
Miller et al., "Optical; bistability due to increasing absorption", Optics Letters, vol. 9, 162 (1984).
Lee et al., "Room-Temperature Optical Nonlinearities in GaAs", Phys. Rev. Lett. 57, 2446 (1986).
Dias et al., "Fiber-Optic crossbar switch with broadcast capability", Optical Engineering 27, 955 (1988).
Simes et al., "Electrically tunable Fabry-Perot mirror using multiple quantum well index modulation", Appl. Phys. Lett. 53, 637 (1988).
Lewis et al., "The Growth of Magnesium-Doped GaAs By The OM-VPE Process", J. Electron. Mater, 12, 507 (1983).
Partain et al., "26.1% solar cell efficiency for Ge mechanically stacked under GaAs", J. Appl. Phys. 62, 3010 (1987).
Hamaker et al., "26% efficient magnesium-doped AlGaAs/GaAs solar concentrator cells", Appl. Phys. Lett. 47, 762 (1985).
Neuberger, III-V Semiconducting Compounds, Handbook of Electronic Materials, vol. 2 (Plenum, N.Y. 1971), pp. 53, 98.
Sze, Physics of Semiconductor Devices, (Wiley, N.Y., 1969), pp. 57, 58.
Hsu et al., "Multiple quantum well spatial light modulators for optical processing applications", Optical Engineering 27, 372 (1988).
Fraas et al., "GaSb booster cells for over 30% efficient solar-cell stacks", J. Appl. Phys. 66, 3866 (1989).
Streible et al., "Digital Optics", IEEE 77, 1954 (1989).
Bailey et al., "Temperature-dependent characteristics of GaAs/AlGaAs multiple-quantum-well optical modulators", J. Appl. Phys. 66, 3445 (1989).
Tomita et al., "F:1 ON-OFF contrast InGaAs/InP multiple quantum well Fabry-Perot etalon modulator", Appl. Phys. Lett. 55, 1817 (1989).
Lee et al., "Electrodispersive multiple quantum well modulator", Appl. Phys. Lett, 53, 1684 (1988).
Miller et al., "Novel Hybrid optically bistable switch: The quantum well self-electro-optic effect device", Appl. Phys. lett. 45, 13 (1984).
Wood et al., "100 ps Waveguide Multiple Quantum Well (MQW) Optical Modulator With 10:1 On/Off Ratio", Electronics Lett. 21, 693 (1985).
Boyd et al., "Multiple quantum well reflection modulator", Appl. Phys. Lett. 50, 1119 (1987).
Miller et al., "Integrated quantum well self-electro-optic effect device: 2X2 array of optically bistable switches", Appl. Phys. Lett. 49, 821 (1986).
Ideda, "Laser Diode Switch", Electron, Lett. 17, 899 (1981).
Walker et al., "Measurment of Semiconductor Laser Amplifier Noise Figure in Coherent Optical Transmission System", Electron, Lett. 25, 1681 (1989).
Granestrand et al., "Integrated Optics 4.times.4 Switch Matrix With Digital Optical Switches", Electron, Lett. 26, 4 (1990).
Efron et al., "The silicon liquid-crystal light valve", J. Appl. Phys. 57, 1356 (1985).
Abdulhalim et al., "High-speed analog spatial light modulator using a hydrogenated amorphous silicon photosensor and an electroclinic liquid crystal", Appl. Phys. Lett. 55, 1603 (1989).
Goodwin et al., "8.times.8 Element hybridised PLZT/Silicon Spatial Light Modulator Array", Electron, Lett. 25, 1260 (1989).
Goosen et al., "Observation of room-temperature blue shift and bistability in a strained InGaAs-GaAs <111> self-electro-optic effect device", Appl. Phys. Lett. 56, 715 (1990).
Carslaw et al., Conduction of Heat in Solids, Oxford, Oxford, 1980) pp. 2, 9 and 92.
Whitehead et al., "Low-Voltage Multiple Quantum Well Reflection Modulator with On:Off Ration >100:1", Electron, Lett. 25, 984 (1989)
Sharfin et al., "Femtojoule Optical switching in nonlinear semiconductor laser amplifiers", Appl. Phys. Lett. 48, 321 (1986).
Partain Larry D.
Ristow Maria L.
Schultz Jocelyn C.
Virshup Gary F.
Heartney Phan T.
Heartney Phan T.
Lee John D.
Sgarbossa Peter J.
Varian Associates Inc.
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