Optical wavelength converter with temperature tuning

Details Optical wavelength converter with temperature tuning Optical wavelength converter with temperature tuning

1995-02-10

1996-08-13

Lee, John D.

Optical: systems and elements

Optical frequency converter

Dielectric optical waveguide type

359328, 385122, G02F 137

Patent

active

055462200

ABSTRACT:
An optical wavelength converter includes an optical wavelength converting element having a multimode waveguide of a core of a nonlinear optical material with a high temperature dependency or temperature coefficient of an index difference for the fundamental wave and secondary harmonic and a clad surrounding the multimode waveguide for converting a wavelength of a fundamental wave entering the multimode waveguide to a 1/2 wavelength of a secondary harmonic; and a temperature tuning device for changing a temperature of the clad and the multimode waveguide within a predetermined temperature range to maintain a phase matching temperature of the fundamental wave and the secondary harmonic in the optical wavelength converting element. The temperature tuner changes the temperature coefficient so as to select a pertinent pair of the fundamental wave and secondary harmonic modes for a wavelength conversion. The multimode waveguide structure has a large sectional area which enables output of a stable high power of secondary harmonic and is easily manufactured.

REFERENCES:
patent: 5029976 (1991-07-01), Goto
patent: 5031999 (1991-07-01), Harada et al.
patent: 5199097 (1993-03-01), Shinokura et al.

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