发明名称 |
Optical communication system |
摘要 |
An optical communication system for optically transmitting transmission data from a transmitting station to a transmitting device includes an adder for adding an intermediate frequency subcarrier signal modulated with data to be transmitted to a pilot carrier signal as a sinusoidal wave, and an electro-optical converter for electro-optically converting the above sum signal to an optical signal by directly modulating a semiconductor laser element having a resonant frequency fr in accordance with the sum signal and transmitting the signal to an optical fiber for a down link. The frequency fIF of the intermediate frequency subcarrier signal and the frequency fLO of the pilot carrier signal satisfyand
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申请公布号 |
US6504636(B1) |
申请公布日期 |
2003.01.07 |
申请号 |
US19990329574 |
申请日期 |
1999.06.10 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
SETO ICHIRO;TOMIOKA TAZUKO;OHSHIMA SHIGERU |
分类号 |
H04B10/155;H04J3/16;H04J14/02;(IPC1-7):H04B10/12;H04B7/00 |
主分类号 |
H04B10/155 |
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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