| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an optical intensity modulator capable of effectively modulating optical intensity at low voltage. <P>SOLUTION: Upper part electrodes 15 are formed at upper parts of light guides 12 via buffer layers 13 at a part where the two light guides 12 are formed to be parallel to each other at the center of a substrate 11. The upper part electrodes 15 are formed with widths L wider than the average widths M of the light guides 12 at width wider parts 15b far from the lower ends 15a coming in contact with the buffer layers 13 and narrowed acutely toward the lower ends 15a from the width wider parts 15b. The upper electrodes 15 are formed with widths W narrower than the average widths M of the light guides 12 at the lower ends 15a. The upper electrodes 15 is formed so as to be narrowed at an obtuse angle toward further upper parts from the width wider parts 15b, that is, toward the direction far from the light guides 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
