Optical wavelength converter

Optical waveguides – With optical coupler – Particular coupling function

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385 4, 385 37, 359326, G02B 610

Patent

active

052855082

ABSTRACT:
An optical wavelength converter comprises a substrate, a first waveguide formed in the substrate and allowing a fundamental wave to enter therein, and a second waveguide extending parallel to the first waveguide and disposed on the substrate at a predetermined distance spaced from the first waveguide, wherein the second waveguide has refractive index gratings formed and arranged periodically in the extending direction thereof, each refractive index grating having an equivalent refractive index different from that of the second waveguide. The optical wavelength converter is of high conversion efficiency.

REFERENCES:
patent: 5123070 (1992-06-01), Bradley
patent: 5200939 (1993-04-01), Nishiwaki et al.
"Optical Wavelength Converter Using a LiNbO.sub.3 Waveguide," Japanese Journal of Applied Physics, Naoshi Uesugi, vol. 49, No. 12, pp. 1234-1238, 1980.
"Electric Field Tuning of Second-Harmonic Generation in a Three-Dimensional LiNbO.sub.3 Optical Waveguide," Applied Physics Letter 34 (1), Naoshi Uesugi et al, pp. 60-62, Jan. 1, 1979.

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