| 摘要 |
A light modulator for modulating light upon application of a signal voltage has a substrate (2), an optical waveguide (7) formed on a side of a front surface side of the substrate, and first and secondary electrodes (8;5A,5B) for applying the signal voltage to the light propagating through the optical waveguide. The first electrode is formed on a front surface side of the optical waveguide (7) and includes a main portion (8c) covering the front surface side of the optical waveguide and an overhanging portion or portions (8a,8b) projecting to the side from the main portion. <IMAGE> |
