发明名称 |
WAVEGUIDE TYPE OPTICAL DEVICE |
摘要 |
In a waveguide type optical device which has an optical waveguide and modulation electrodes for varying its refractive index, both formed in the top of a substrate of a ferroelectric crystal having a pyroelectric effect, the top of the crystal substrate being parallel to the direction of its spontaneous polarization, conductive films are formed in two surfaces of the crystal substrate which cross the direction of the spontaneous polarization. The conductive films are electrically interconnected to thereby prevent a change in the operating temperature characteristic of the optical device which is caused by the pyroelectric effect of the crystal substrate.
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申请公布号 |
CA2057596(C) |
申请公布日期 |
1996.02.20 |
申请号 |
CA19912057596 |
申请日期 |
1991.12.13 |
申请人 |
JAPAN AVIATION ELECTRONICS INDUSTRY LIMITED |
发明人 |
KAKU, RYOJI;TAKAHASHI, HIROYUKI;ASAMI, EIICHI |
分类号 |
G02F1/035;G02F1/05;(IPC1-7):G02F1/05 |
主分类号 |
G02F1/035 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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