Optical fiber emission circuit and fiber laser

OPT OpenIR > 半导体激光器专利数据库

	Optical fiber emission circuit and fiber laser
其他题名	Optical fiber emission circuit and fiber laser
	TANAKA, HIRONORI
	2011-08-25
专利权人	FUJIKURA LTD.
公开日期	2011-08-25
授权国家	美国
专利类型	发明申请
摘要	Object An object of the present invention is to reuse unavailable excitation light without deteriorating reliability of a fiber laser. Solving Means An optical fiber emission circuit according to the present invention includes a rare earth-doped optical fiber 11 that has a first clad 22 including a plurality of layers of clads around a core 21 and emits radiation light having a wavelength longer than a wavelength of excitation light when the excitation light is made incident thereto, and a GRIN lens 12 that is fuse-bonded to an end face of the rare earth-doped optical fiber and has a refractive index distribution in a radial direction. The GRIN lens 12 has a lens length that is a value except for an integer multiple of 0.5 pitch and is provided with a reflection filter 24 that is disposed at an open end part in an axial direction and selectively reflects the wavelength of the excitation light.
其他摘要	发明内容本发明的目的是在不降低光纤激光器可靠性的情况下重复使用不可用的激发光。解决方案根据本发明的光纤发射电路包括稀土掺杂光纤11，其具有第一包层22，第一包层22包括围绕芯21的多层包层并发射波长长于波长的辐射光。激发光入射到激发光时的激发光，以及熔融粘合到稀土掺杂光纤的端面并且在径向上具有折射率分布的GRIN透镜12。 GRIN透镜12具有透镜长度，该透镜长度是除了0.5节距的整数倍之外的值，并且设置有反射滤光器24，该反射滤光器24设置在轴向方向上的开口端部分处并且选择性地反射激发光的波长。
主权项	An optical fiber emission circuit comprising: a rare earth-doped optical fiber that has a plurality of layers of clads around a core and emits radiation light having a wavelength longer than a wavelength of excitation light when the excitation light is made incident thereto and a GRIN (Graded-Index) lens that is fuse-bonded to an end face of the rare earth-doped optical fiber and has a refractive index distribution in a radial direction, wherein the GRIN lens has a lens length that is a value except for an integer multiple of 0.5 pitch and is provided with a reflection filter that is disposed at an open end part in an axial direction and selectively reflects the wavelength of the excitation light.
申请日期	2010-12-08
专利号	US20110206068A1
专利状态	失效
申请号	US12/962837
公开（公告）号	US20110206068A1
IPC 分类号	H01S3/30 \| G02B6/32
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/54204
专题	半导体激光器专利数据库
作者单位	FUJIKURA LTD.
推荐引用方式 GB/T 7714	TANAKA, HIRONORI. Optical fiber emission circuit and fiber laser. US20110206068A1[P]. 2011-08-25.