发明名称 |
OPTICAL MODULATION DEVICE, DRIVING METHOD OF OPTICAL MODULATION DEVICE, AND MANUFACTURING METHOD OF OPTICAL MODULATION DEVICE |
摘要 |
When phases of lights passing through arms are adjusted, a first DC bias and a first modulation signal are applied to one arm from one modulating electrode, and a second DC bias and a second modulation signal are applied to the other arm from the other modulating electrode. The first and second DC biases are applied to the modulating electrodes such that a rate of a product of a length of one modulating electrode and the first DC bias and a product of a length of the other modulating electrode and the second DC bias is kept at a constant value. According to this constitution, it is possible to enable an optimum control of a phase difference between the arms and a precise control of wavelength chirp characteristics with a simple element constitution, and an optical modulation of which device size is small and having fine characteristics is enabled.
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申请公布号 |
US2013108204(A1) |
申请公布日期 |
2013.05.02 |
申请号 |
US201213656895 |
申请日期 |
2012.10.22 |
申请人 |
FUJITSU LIMITED;FUJITSU LIMITED |
发明人 |
TAKABAYASHI KAZUMASA;HAYAKAWA AKINORI |
分类号 |
G02F1/035 |
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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