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	Induced grating devices and method of making same
	BYRON, KEVIN C.
	1988-12-27
著作权人	NORTHERN TELECOM LIMITED
专利号	US4793680
国家	美国
文献子类	授权发明
其他题名	Induced grating devices and method of making same
英文摘要	It has been found that when a pulsed high-power laser beam is incident on the surfaces of a wide variety of materials, ripples are produced on such surface. This is due to interference between scattered waves and the incident beam producing intensity fringes, and hence localized heating. The dimensions of the ripples are dependent on the wavelngth of the incident light. This is used to produce permanent (after cooling) gratings on the outer surface of an optical waveguide, for example an optical fibre, on to which a laser beam is focussed by a lens system. Hence a grating whose length is a few hundreds of micrometers is produced. If the cladding is removed this effect of ripple generation is enhanced.
公开日期	1988-12-27
申请日期	1987-05-21
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/35864]
专题	半导体激光器专利数据库
作者单位	NORTHERN TELECOM LIMITED
推荐引用方式 GB/T 7714	BYRON, KEVIN C.. Induced grating devices and method of making same. US4793680. 1988-12-27.

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