发明名称 |
DUAL POLARIZATION QUADRATURE PHASE SHIFT KEYING OPTICAL MODULATOR |
摘要 |
A DP QPSK optical modulator includes an input port; an optical branching unit; an optical modulation unit having first through fourth Mach-Zehnder interferometers; a first phase-change unit connected to the third Mach-Zehnder interferometer; a second phase-change unit connected to the fourth Mach-Zehnder interferometer; an optical multiplexer; and a multimode interference coupler including a multimode interference waveguide, first through third input ports, and an output port having a taper-shaped waveguide. The first Mach-Zehnder interferometer is connected to the first input port. One end of the optical multiplexer is connected to the second Mach-Zehnder interferometer and the third Mach-Zehnder interferometer via the first phase change unit. The other end of the optical multiplexer is connected to the second input port. The fourth Mach-Zehnder interferometer is connected to the third input port via the second phase-change unit.
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申请公布号 |
US2013216175(A1) |
申请公布日期 |
2013.08.22 |
申请号 |
US201313765765 |
申请日期 |
2013.02.13 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD.;SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
ONISHI YUTAKA |
分类号 |
G02F1/225 |
主分类号 |
G02F1/225 |
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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