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	Robust pigtail system for high power laser modules
	BRUNNER, REINHARD; LÜTZELSCHWAB, MARKUS; VALK, BERNHARD; PIERER, JÖRG
	2012-07-25
著作权人	OCLARO TECHNOLOGY LIMITED
专利号	EP2479594A1
国家	欧洲专利局
文献子类	发明申请
其他题名	Robust pigtail system for high power laser modules
英文摘要	In a high power, i.e. 100W and more, semiconductor laser module, used e.g. in opto-electronics as pump laser modules or in laser machining or medical applications, the laser power is launched into a glass fiber which transports the optical power to a desired location. It is difficult to focus the full laser power into the fiber core's end (8). Any misalignment results in stray energy heating up the fiber and its cladding, often resulting in catastrophic failure of the affected module. The invention concerns a robust and cost-effective design to manage and dissipate the heat generated by absorbing uncontrolled uncoupled and de-coupled stray light or radiation by providing a structure of a transparent ferrule (6) holding the fiber core (2) with its cladding (12), this ferrule (6) being fixed to a heat-dissipating component of the module by a transparent adhesive (20), whereby core (2), cladding (12), adhesive (20), and ferrule (6) each have a predetermined refractive index, chosen such that stray radiation is directed into the heat-dissipating component (5). A reflector (13) at the inner end of the ferrule (6), i.e. opposite the laser and preferably funnel-shaped, diverts any remaining stray radiation also towards the heat-dissipating component (5). This combination of features minimizes or avoids catastrophic damage such as melt-down or ignition.
公开日期	2012-07-25
申请日期	2011-01-21
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/51693]
专题	半导体激光器专利数据库
作者单位	OCLARO TECHNOLOGY LIMITED
推荐引用方式 GB/T 7714	BRUNNER, REINHARD,LÜTZELSCHWAB, MARKUS,VALK, BERNHARD,et al. Robust pigtail system for high power laser modules. EP2479594A1. 2012-07-25.

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