Optical beam delivery device formed of optical fibers configured for beam divergence or mode coupling control

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	Optical beam delivery device formed of optical fibers configured for beam divergence or mode coupling control
其他题名	Optical beam delivery device formed of optical fibers configured for beam divergence or mode coupling control
	KOPONEN, JOONA; FARROW, ROGER L.; KLINER, DAHV A.V.
	2018-08-02
专利权人	NLIGHT, INC.
公开日期	2018-08-02
授权国家	美国
专利类型	发明申请
摘要	An optical beam delivery device is formed of optical fibers configured for beam divergence or mode coupling control. An incident optical beam propagates through a first length of fiber, which is coupled to a second length of fiber and has a first refractive index profile (RIP). The first RIP enables, in response to an applied perturbation, modification of the beam characteristics of the incident optical beam to form an adjusted optical beam having modified beam characteristics relative to beam characteristics of the incident optical beam. The second length of fiber is formed with one or more confinement regions defining a second RIP and arranged to confine at least a portion of the adjusted optical beam. The second and first lengths of fiber are tapered in the direction of light beam propagation to control output beam divergence or susceptibility to beam mode coupling in the first length of fiber, respectively.
其他摘要	光束传输装置由配置用于光束发散或模式耦合控制的光纤形成。入射光束传播通过第一长度的光纤，该光纤耦合到第二长度的光纤并具有第一折射率分布（RIP）。第一RIP响应于所施加的扰动，能够修改入射光束的光束特性，以形成相对于入射光束的光束特性具有改进的光束特性的调整光束。第二长度的光纤形成有一个或多个限制区域，该限制区域限定第二RIP并且布置成限制调整的光束的至少一部分。第二和第一长度的光纤在光束传播方向上逐渐变细，以分别控制第一长度光纤中的输出光束发散或对光束模式耦合的敏感性。
主权项	An optical beam delivery device formed of optical fibers configured for beam divergence or mode coupling control, comprising: a first length of fiber through which an incident optical beam having beam characteristics propagates and which has a first refractive index profile (RIP), the first RIP enabling, in response to an applied perturbation, modification of the beam characteristics of the incident optical beam to form an adjusted optical beam having modified beam characteristics relative to the beam characteristics of the incident optical beam; a second length of fiber coupled to the first length of fiber and formed with a set of one or more confinement regions defining a second RIP and arranged to confine at least a portion of the adjusted optical beam; and a tapered region positioned along one of the first or second lengths of fibers.
申请日期	2018-03-28
专利号	US20180214979A1
专利状态	申请中
申请号	US15/938854
公开（公告）号	US20180214979A1
IPC 分类号	B23K26/06 \| G02B27/09 \| G02B6/028
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/181661/54885
专题	半导体激光器专利数据库
作者单位	NLIGHT, INC.
推荐引用方式 GB/T 7714	KOPONEN, JOONA,FARROW, ROGER L.,KLINER, DAHV A.V.. Optical beam delivery device formed of optical fibers configured for beam divergence or mode coupling control. US20180214979A1[P]. 2018-08-02.