Wavelength converter manufacturing method and wavelength...

Optical: systems and elements – Optical frequency converter

Reexamination Certificate

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C359S328000, C385S122000

Reexamination Certificate

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07995267

ABSTRACT:
Affords a wavelength converter manufacturing method and a wavelength converter whereby the transmissivity can be improved. A method of manufacturing a wavelength converter (10a) is provided with the following steps. At first, crystal is grown. Then a first crystal (11) and a second crystal (12) are formed by sectioning the crystal into two or more in such a way that the domains are the reverse of each other. The first and second crystals (11) and (12) are then interlocked in such a way that a domain inversion structure in which the polar directions of the first and second crystals (11) and (12) periodically reverse along an optical waveguide (13) is formed, and the domain inversion structure satisfies quasi-phase-matching conditions for an incoming beam (101).

REFERENCES:
patent: 5150447 (1992-09-01), Tamada et al.
patent: 5943465 (1999-08-01), Kawaguchi et al.
patent: 2002/0051282 (2002-05-01), Tsuruma
patent: 0 767 396 (1997-04-01), None
patent: H9-197455 (1997-07-01), None
patent: 2004-239959 (2004-08-01), None
patent: 2008-170710 (2008-07-01), None
Machine translation of JP2004-239959, Kawai Hitoshi, Aug. 26, 2004.

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