Optical modulator
申请(专利)号： EP19900308949
专利号： EP0413568A3 主分类号： G02F1/03 申请权利人： OPTICAL
MEASUREMENT TECHNOLOGY DEVELOPMENT CO. LTD. 公开国代码： EP 优先权国家： JP
摘 要：
This invention enables low voltage operation and improves matching in velocities of the radio frequency and of light by lowering effective index and to thereby expand modulation frequency bandwidth by structuring an optical modulator where a substrate of the
material of which refractive index changes by an application of electric field description, and the insulating buffer
layers (3) are eliminated from the regions other than the electrodes (4). By
structuring the modulator in a manner to satisfy the prescribed conditions with dimensions of each unit, the light can be matched in complete phase matching (group velocity matching) with
radiofrequency while characteristic
impedance of the electrodes is fixed at a desired value.
申请日： 1990-08-15 公开公告日： 1992-01-29
分类号： G02F1/03;
G02F1/035 发明设计人： IWAOKA, HIDETO;
MIYAMOTO, HIROSHI
申请国代码： EP
优先权： 19890815 JP
211013/89; 19891129 JP 311467/89
摘 要 附 图：
主权项：
权 利 要 求 说 明 书
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Optical modulator
