发明名称 |
Dispersion compensator, optical transmission system and optical transmission method |
摘要 |
A variable dispersion slope compensator with a high-accuracy and a low-cost structure for compensating the dispersion slope compensation error accompanying variations in the zero-dispersion wavelength in transmission fibers in long-distance, high-speed WDM (wavelength division multiplexing) transmission systems. When the value by which the optical fiber dispersion slope (ps/nm/nm/km) is divided by the dispersion coefficient (ps/nm/km) is defined as the relative dispersion slope RDS (/nm), then the variable dispersion slope compensator includes a first dispersion compensation fiber group including at least two dispersion compensation fibers with a common relative dispersion slope; and a second dispersion compensation fiber group including at least two dispersion compensation fibers with a common relative dispersion slope different from the relative dispersion slope of the first group; and a patch cable group or an optical switching group for making an optional connection combination between the first and second dispersion compensation fiber groups.
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申请公布号 |
US7457494(B2) |
申请公布日期 |
2008.11.25 |
申请号 |
US20070833086 |
申请日期 |
2007.08.02 |
申请人 |
HITACHI COMMUNICATION TECHNOLOGIES, LTD. |
发明人 |
SEKINE KENRO |
分类号 |
G02B6/26;G02F1/01 |
主分类号 |
G02B6/26 |
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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