Patent ID: 7799589

Claim:
A method for manufacturing an optical waveguide apparatus, comprising: a step A of implanting hydrogen ions into a front surface of a single-crystal silicon substrate; a step B of performing an activation treatment with respect to a front surface of at least one of a quartz substrate and the single-crystal silicon substrate; a step C of bonding the front surfaces of the quartz substrate and the single-crystal silicon substrate to each other; a step D of mechanically delaminating a silicon film from the single-crystal silicon substrate to form an SOI film on the front surface of the quartz substrate, thereby providing an SOI substrate; a step E of forming a single-crystal silicon core for an optical waveguide from the SOI film; and a step F of providing a light emitting device capable of irradiating the single-crystal silicon core with a light having a wavelength of 1.1 μm or below on a back surface side of the quartz substrate, thereby manufacturing the optical waveguide apparatus in which modulating an optical signal between on and off is enabled depending on the presence or absence of the irradiated light from the light emitting device to the single-crystal silicon core.