发明名称 |
Optical modulator module and semiconductor optical modulator |
摘要 |
A semiconductor optical modulator includes optical input and output portions; a plurality of Mach-Zehnder modulators, each including first and second waveguide arms having first and second modulation electrodes, respectively; an optical demultiplexer coupled between the optical input portion and the Mach-Zehnder modulators through an optical waveguide; an optical multiplexer coupled between the optical output portion and the Mach-Zehnder modulators; a plurality of electrical inputs; and a plurality of differential transmission lines electrically connecting the electrical inputs to the Mach-Zehnder modulators. The first modulation electrode and the second modulation electrode of at least one of the Mach-Zehnder modulators, one of the electrical inputs, and one of the differential transmission lines that connects such one electrical input to such one Mach-Zehnder modulator form an electrical circuit having a differential impedance in a range of 80Ω to 95Ω. |
申请公布号 |
US9046703(B2) |
申请公布日期 |
2015.06.02 |
申请号 |
US201414191025 |
申请日期 |
2014.02.26 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
Fukuda Chie;Kono Naoya;Seki Morihiro;Yamaji Kazuhiro;Yamauchi Yasuyuki;Tanaka Keiji;Tatsumi Taizo;Itabashi Naoki |
分类号 |
G02F1/035;G02F1/01;G02F1/225;H04B10/556;G02B6/293 |
主分类号 |
G02F1/035 |
代理机构 |
Smith, Gambrell & Russell LLP |
代理人 |
Smith, Gambrell & Russell LLP |
主权项 |
1. A semiconductor optical modulator comprising:
an optical input portion; an optical output portion; a plurality of Mach-Zehnder modulators arrayed in a direction of a first axis, each of the Mach-Zehnder modulators including a first waveguide arm with a first modulation electrode and a second waveguide arm with a second modulation electrode; an optical waveguide having a mesa structure; an optical demultiplexer coupled between the optical input portion and the Mach-Zehnder modulators through the optical waveguide; an optical multiplexer coupled between the optical output portion and the Mach-Zehnder modulators; a plurality of electrical inputs; and a plurality of differential transmission lines electrically connecting the electrical inputs to the Mach-Zehnder modulators, wherein the Mach-Zehnder modulators, the optical demultiplexer, the optical multiplexer, the electrical inputs, and the differential transmission lines are disposed on a single substrate, and the first modulation electrode and the second modulation electrode of at least one Mach-Zehnder modulator, and one of the electrical inputs, and one of the differential transmission lines that connects the said one of the electrical inputs to the at least one Mach-Zehnder modulator form an electrical circuit having a differential impedance in a range of 80Ω 95Ω. |
地址 |
Osaka JP |