Fiber optic coupling filter and amplifier

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	Fiber optic coupling filter and amplifier
其他题名	Fiber optic coupling filter and amplifier
	HALL, DOUGLAS WARREN, CORNING INCORPORATED; HAWK, ROBERT MARTIN, CORNING INCORPORATED
	1992-08-19
专利权人	CORNING INCORPORATED
公开日期	1992-08-19
授权国家	欧洲专利局
专利类型	发明申请
摘要	The disclosed fiber optic filter structure includes an optical fiber having a single-mode core (31) surrounded by cladding material (32), and at least one light-attenuating light path (33) in the cladding material uniformly spaced from the single-mode core. The propagation constants of the single-mode core and the light path are different at wavelengths except for at least one wavelength λf. The spacing (S) between the single-mode core and the light path are sufficiently small that light within a first band of wavelengths centered around λf couples between the single-mode core and the light path. At least a portion of the light within the first band of wavelengths is absorbed in the light path. In that embodiment in which the single-mode core is a fiber amplifier gain core, the filtering function of the light path modifies the fiber amplifier gain spectrum.
其他摘要	所公开的光纤滤波器结构包括具有由包层材料（32）围绕的单模芯（31）的光纤，并且包层材料中的至少一个光衰减光路（33）与单模均匀间隔开核心。除了至少一个波长λf之外，单模芯和光路的传播常数在波长上是不同的。单模芯和光路之间的间隔（S）足够小，使得以λf为中心的第一波长带内的光耦合在单模芯和光路之间。第一波长带内的至少一部分光在光路中被吸收。在单模核心是光纤放大器增益核心的实施例中，光路的滤波功能修改了光纤放大器增益谱。
主权项	A fiber optic filter structure comprising an optical fiber having a single-mode core surrounded by cladding material, and at least one light-attenuating light path in said cladding material uniformly spaced from said single-mode core, the propagation constants of said single-mode core and said light-attenuating light path being different at wavelengths except for at least one wavelength λ f, the spacing between said single-mode core and said at least one light-attenuating light path being sufficiently small that light within a first band of wavelengths centered around λ f couples between said single-mode core and said light-attenuating light path, at least a portion of the light within said first band of wavelengths being absorbed in said light-attenuating light path.
申请日期	1991-11-27
专利号	EP0498945A2
专利状态	失效
申请号	EP1991120234
公开（公告）号	EP0498945A2
IPC 分类号	G02B6/00 \| G02B6/26 \| G02B6/28 \| G02B6/34 \| H01S3/06 \| H01S3/07 \| H01S3/10 \| H01S3/17
专利代理人	-
代理机构	BOON, GRAHAM ANTHONY
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/51919
专题	半导体激光器专利数据库
作者单位	CORNING INCORPORATED
推荐引用方式 GB/T 7714	HALL, DOUGLAS WARREN, CORNING INCORPORATED,HAWK, ROBERT MARTIN, CORNING INCORPORATED. Fiber optic coupling filter and amplifier. EP0498945A2[P]. 1992-08-19.

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