发明名称 |
OPTICAL TRANSMITTER AND DC BIAS CONTROL METHOD |
摘要 |
The present invention provides an optical transmitter for modulating light from a light source to generate an optical transmission signal with use of a data sequence as an electric signal, the optical transmitter including: a mapping section for mapping the data sequence to be converted into multi-level data based on modulation multi-level degree information indicating multi-level degree of the modulation; a D/A converter for converting the multi-level data output from the mapping section into an analog signal; an optical modulator to be driven based on the analog signal output from the D/A converter, for modulating the light from the light source; and a bias control section for setting control polarity of DC bias control of the optical modulator based on the modulation multi-level degree information. |
申请公布号 |
EP2896988(A1) |
申请公布日期 |
2015.07.22 |
申请号 |
EP20120884350 |
申请日期 |
2012.09.12 |
申请人 |
MITSUBISHI ELECTRIC CORPORATION |
发明人 |
SUGIHARA, TAKASHI;YOSHIDA, TSUYOSHI |
分类号 |
G02F1/03;G02F1/035;H04B10/54 |
主分类号 |
G02F1/03 |
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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