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	Tapered fiber laser
	DEJNEKA, MATTHEW J.; MINELLY, JOHN D.; ZENTENO, LUIS A.
	2001-11-27
著作权人	CORNING INCORPORATED
专利号	US6324326
国家	美国
文献子类	授权发明
其他题名	Tapered fiber laser
英文摘要	A tapered fiber laser having a multi-mode section, a single-mode section, and either a tapered section or fundamental mode matching junction therebetween. The multi-mode section has a large core to directly receive pump light from a broad stripe laser or diode bar, and a length preferably longer than the absorption length of the pump light (so optical amplification occurs predominantly in the multi-mode section). Doping levels can be increased to reduce the multi-mode length. The taper angle is sufficiently small to produce adiabatic compression of the fundamental mode from the multi-mode to single-mode sections, and acts as a cutoff filter favoring lasing of the fundamental mode within the multi-mode section. Alternately, the step junction may have a mode field diameter matched to the lowest-order mode, with laser light output via the single-mode section. The invention can be applied to waveguides (particularly those having an aspect ratio corresponding to a broad stripe laser source), doped with ytterbium or neodymium ions, and is particularly advantageous as a pump source for an erbium-doped fiber amplifier (EDFA).
公开日期	2001-11-27
申请日期	1999-08-20
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/44588]
专题	半导体激光器专利数据库
作者单位	CORNING INCORPORATED
推荐引用方式 GB/T 7714	DEJNEKA, MATTHEW J.,MINELLY, JOHN D.,ZENTENO, LUIS A.. Tapered fiber laser. US6324326. 2001-11-27.

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