发明名称 Optical device
摘要 <p>An optical device includes a semiconductor optical modulator element (46) which is connected to an end of a signal line (42) in form of a microstrip high-frequency line and whose other electrode is connected to a ground electrode (48) by a bonding wire (50). The signal line (42) includes first and second line portions (42a, 42b). The first line portion (42a) nearer to the entrance of a high-frequency signal has a width W1 determined to adjust its characteristic impedance to 50 OMEGA and a length L1 equal to an integer multiple of 1/4 of its own guide wavelength. The second line portion (42b) has a width W2 determined to adjust its impedance to an intermediate value between the impedance of the optical modulator element 46 and the impedance of the first line portion (42a), and a length L2 equal to an integer multiple of 1/4 of its own guide wavelength. &lt;IMAGE&gt;</p>
申请公布号 EP0773464(A2) 申请公布日期 1997.05.14
申请号 EP19960115862 申请日期 1996.10.02
申请人 KOKUSAI DENSHIN DENWA KABUSHIKI KAISHA 发明人 TANAKA, HIDEAKI;MATSUSHIMA, YUICHI
分类号 G02F1/015;G02F1/03;G02F1/035;(IPC1-7):G02F1/03 主分类号 G02F1/015
代理机构 代理人
主权项
地址