发明名称 |
Wavelength division multiplex transmission system |
摘要 |
A first transmitting section frequency-multiplexes a data signal and a monitor signal, and then converts the resultant signal to an optical signal for output. A first receiving section converts the optical signal transmitted via a first optical transmission path and a wavelength demultiplexer into an electrical signal, and then extracts the monitor signal. A difference detector compares a monitor signal level with a predetermined reference level, and then outputs wavelength information to a second optical transmission path. Based on the wavelength information transmitted via the second optical transmission path, a first wavelength controller adjusts the wavelength of the optical signal for stabilization at a predetermined wavelength. Thus, it is possible to achieve a wavelength division multiplex transmission system capable of controlling the wavelength of the optical signal at low cost.
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申请公布号 |
US6891995(B2) |
申请公布日期 |
2005.05.10 |
申请号 |
US20030373699 |
申请日期 |
2003.02.27 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
IKUSHIMA TSUYOSHI;FUSE MASARU;YASUE TOSHIHIKO |
分类号 |
H04B10/02;H04B10/08;H04J14/02;(IPC1-7):G02B6/28;H04J14/00 |
主分类号 |
H04B10/02 |
代理机构 |
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主权项 |
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地址 |
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