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	High Durability Side Fire Optical Fiber for High Power Applications
	HARSCHACK, ALEXANDER; NEUBERGER, WOLFGANG
	2011-07-07
著作权人	BIOLITEC UNTERNEHMENSBETEILIGUNGS II AG
专利号	US20110166562A1
国家	美国
文献子类	发明申请
其他题名	High Durability Side Fire Optical Fiber for High Power Applications
英文摘要	An optical fiber treatment system is provided for high power laser transmission to an area of medical treatment. A side fire optical fiber tip for use in high power laser applications having outputs of greater than or equal to 50 Watts is a key to the system. Embodiments are particularly appropriate for the medical treatment of benign prostate hyperplasia (BPH) with a side fire optical fiber tip using a Holmium:YAG laser or a high power diode laser. Such procedures can be done with only local anesthesia. A predetermined length of an output tip on the distal end of the optical fiber of the present invention is formed with an optical fiber core and cladding layer of preselected thickness wherein the cladding to core diameter ratio is at least as great as A side fire surface is formed on the distal end of the core/clad output end. Over this optical fiber output end, a pure silica capillary tube is fused to the predetermined length of exposed cladding where the outermost cladding is also pure silica to reduce thermal mismatch during the fusion process. By having the refractive index at the fusing interface of the tube to the cladding matched, and bubbles or gaps eliminated or prevented, it is possible to substantially enhance durability and eliminate Fresnel reflection losses at this interface. Further, the outer surface area where the laser energy is exiting from the tube may be heat treated with a laser to additionally increase durability for high power laser energy transmission in fluid environments. Germanium-doped silica as well as pure silica can be used as fiber core material.
公开日期	2011-07-07
申请日期	2010-01-04
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/58502]
专题	半导体激光器专利数据库
作者单位	BIOLITEC UNTERNEHMENSBETEILIGUNGS II AG
推荐引用方式 GB/T 7714	HARSCHACK, ALEXANDER,NEUBERGER, WOLFGANG. High Durability Side Fire Optical Fiber for High Power Applications. US20110166562A1. 2011-07-07.

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