| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To suppresses coupling loss between an optical modulator and an outside optical fiber and coupling loss inside the optical modulator, in the optical modulator which achieves velocity matching by adopting a thin plate with a thickness of 10μm or less in an optical modulation section. <P>SOLUTION: The optical modulator 10A includes: a support substrate 1; a substrate 3 for modulation comprising an electro-optical material; an optical waveguide 4 which is provided on one principal surface 3a side of the substrate 3 for modulation; an electrode which is provided on another principal surface 3b side of the substrate 3 for modulation and applies voltage for modulating light propagating in the optical waveguide; and an adhesive layer 2 which adheres one principal surface 3a of the substrate 3 for modulation to the support substrate 1. The substrate 3 for modulation includes: a modulation section 7 with a thickness of 10μm or less for at least performing modulation of light propagating in the optical waveguide 4; and an optical fiber connection 6 thicker than the modulation section 7. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
