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METHOD OF FORMING DIFFRACTION GRATING AND METHOD OF FABRICATING DISTRIBUTED FEEDBACK LASER DIODE
METHOD OF FORMING DIFFRACTION GRATING AND METHOD OF FABRICATING DISTRIBUTED FEEDBACK LASER DIODE
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机译:衍射光栅的形成方法和分布式反馈激光二极管的制造方法
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摘要
A method of forming a diffraction grating according to the present invention includes a step of preparing a mold having projections and recesses for forming a diffraction grating, a step of bringing the projections and recesses of the mold into contact with a resin layer in a chamber at a first pressure less than atmospheric pressure, a step of setting a pressure in the chamber to a second pressure more than the first pressure while maintaining the contact, and a step of hardening the resin layer while maintaining the contact between the resin layer and the projections and recesses so as to form a pattern for the diffraction grating on the hardened resin layer. The recesses in the projections and recesses of the mold form a closed pattern in the plane of the mold including the projections and recesses.
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