Optical waveguides – Temporal optical modulation within an optical waveguide – Electro-optic
Patent
1995-04-28
1996-08-13
Lee, John D.
Optical waveguides
Temporal optical modulation within an optical waveguide
Electro-optic
385 5, 385122, 385144, G02F 101
Patent
active
055464807
ABSTRACT:
Generally, the present invention is an optically controlled optical waveguide circuit comprising a substrate 30, an inorganic waveguide core 34 disposed within one or more cladding layers 36 upon the substrate 30 and an active cladding drop-in component 40 comprising a non-linear optical material adjacent to the waveguide core wherein the phase of an optical signal within the waveguide core may be modulated by controlling the index of refraction of the active cladding region. An embodiment of the present invention uses an inorganic optical waveguide 34 with a drop-in component of non-linear silica 40 as an active cladding to provide a phase modulator for a Mach-Zender interferometer which can be used to implement high speed low loss switching of optical signals.
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Nuclear Instrumewnts/ Methods in Physics Research B65, '92, Haglund, Jr. et al., "Nonlinear index of refraction of Cu-and Pb-implanted fused silica", pp. 405-411 (No Month).
Electronics Letters, vol. 29 No. 5, Mar. 1993, "Silica-Based Optical Waveguide on Terraced Silicon Substrate as Hybrid Integration Platform", pp. 444-446, Y. Yamada et al.
IEEE Photonics Technilogy Letters, vol. 6, No. 7, Jul. 1994, Yamada et al., "An Application of a Silica-on-Terraced-Silicon Platform to Hybrid Mach-Zehnder Interferometric-Circuits . . .", pp. 822-824.
Optical Engineering, vol. 28 No. 12, Dec. 1989, Yamada et al., "Optical interconnections using a silica-based waveguide on a substrate", pp. 1281-1287.
Nuclear Instruments/Methods in Physics Research B59/60, '91, Yang et al., "Laser-induced fluorescence and nonlinear optical properties of ion-implanted fused silica", pp. 1304-1307. (No Month).
Donaldson Richard L.
Kesterson James C.
Lee John D.
Peterson Bret J.
Texas Instruments Incorporated
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