Fiber optic apparatus with fiber fused lenses

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	Fiber optic apparatus with fiber fused lenses
其他题名	Fiber optic apparatus with fiber fused lenses
	FAN, ROBERT
	2003-09-25
专利权人	OPTIC NET, INC.
公开日期	2003-09-25
授权国家	美国
专利类型	发明申请
摘要	A fiber optic apparatus interfaces a single mode fiber into free space for coupling to active or passive devices with a collimated or parallel ray beam. This is accomplished by splicing or fusing to the end of the single mode fiber one of two types of lenses. The first type uses a graded index fiber which is cut to an odd multiple of a quarter wavelength of the light beam. The second technique is to use a step index fiber with a curved end forming a lens having a length relative to a hypotenuse line along the angle of emission of a single mode fiber to subtend half of the diameter of the core of the step index fiber. This, depending on the curvature at the end of the step index fiber, will produce either a collimated beam or a beam focused to a point.
其他摘要	光纤设备将单模光纤连接到自由空间，以利用准直或平行光束耦合到有源或无源器件。这是通过将两种类型的透镜中的一种透镜拼接或熔合到单模光纤的末端来实现的。第一种类型使用渐变折射率光纤，其被切割成光束的四分之一波长的奇数倍。第二种技术是使用具有弯曲端部的阶梯折射率光纤，该阶梯式光纤形成透镜，该透镜具有沿着单模光纤的发射角相对于斜边线的长度，以对向阶跃折射率光纤的芯的直径的一半。这取决于阶跃折射率光纤末端的曲率，将产生准直光束或聚焦到点的光束。
主权项	A fiber optic apparatus for interfacing a single mode fiber of a predetermined diameter into free space for coupling the associated light beam to active or passive devices comprising lens means of substantially the same diameter as the single mode fiber spliced to an end of such fiber for producing a collimated light beam from the single mode fiber light beam into the free space consisting of one of the following: a) a graded index fiber cut to an odd multiple of a quarter wavelength of the light beam, or b) a step index fiber with a curved end forming a lens which has a length relative to a hypotenuse line along the angle of emission of the single mode fiber through said step index fiber which subtends half of the diameter of the core of the step index fiber.
申请日期	2002-03-20
专利号	US20030179996A1
专利状态	失效
申请号	US10/105999
公开（公告）号	US20030179996A1
IPC 分类号	G02B6/26 \| G02B6/32 \| G02B6/42
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/181661/52677
专题	半导体激光器专利数据库
作者单位	OPTIC NET, INC.
推荐引用方式 GB/T 7714	FAN, ROBERT. Fiber optic apparatus with fiber fused lenses. US20030179996A1[P]. 2003-09-25.