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	Tuneable optical filter
	JEAN-PIERRE WEBER
	1994-02-16
著作权人	TELEFONAKTIEBOLAGET LM ERICSSON
专利号	GB2269679A
国家	英国
文献子类	发明申请
其他题名	Tuneable optical filter
英文摘要	A tuneable optical filter for a wavelength multiplexing system comprises a substrate in which is formed a waveguide 22 and a plurality of tuneable reflection gratings on top of the waveguide. The grating normally block all channels in the incoming lightwave. The gratings are tuned so that their reflection bands do not coincide with the desired channel or channels thereby allowing the desired channel or channels to pass through the filter. The substrate may be a semiconductor and electrodes 24, 26, 28, 30 are provided to tune each grating. Alternatively the gratings are tuned using a heating element.
公开日期	1994-02-16
申请日期	1993-07-29
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/64048]
专题	半导体激光器专利数据库
作者单位	TELEFONAKTIEBOLAGET LM ERICSSON
推荐引用方式 GB/T 7714	JEAN-PIERRE WEBER. Tuneable optical filter. GB2269679A. 1994-02-16.

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