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	Optical transmission system and optical coupler/branching filter
	MATSUOKA, TADASHI; KOSAKA, JUNYA; NAKANO, TETSUSHI
	2003-05-13
著作权人	HITACHI, LTD.
专利号	US6563978
国家	美国
文献子类	授权发明
其他题名	Optical transmission system and optical coupler/branching filter
英文摘要	The objective is an optical transmission unit capable of coupling and branching signal lights of individual wavelengths at a data rate of 10 Gbits/s. In order to achieve the objective, DCFs are provided and proper values of dispersion compensation are given, so that different characteristics depending on the respective wavelengths to be coupled, split and pass through without being split are obtained. The signal lights are amplified by a plurality of low-excitation optical amplifiers to regain their light levels which are weakened due to using an optical coupler, branching filter and DCF together, thereby enabling a long-distance transmission.
公开日期	2003-05-13
申请日期	2001-03-19
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/36735]
专题	半导体激光器专利数据库
作者单位	HITACHI, LTD.
推荐引用方式 GB/T 7714	MATSUOKA, TADASHI,KOSAKA, JUNYA,NAKANO, TETSUSHI. Optical transmission system and optical coupler/branching filter. US6563978. 2003-05-13.

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