Fast tunable multiwavelength laser with folded imaging arrangement of nonoverlapping focal regions

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	Fast tunable multiwavelength laser with folded imaging arrangement of nonoverlapping focal regions
其他题名	Fast tunable multiwavelength laser with folded imaging arrangement of nonoverlapping focal regions
	DRAGONE, CORRADO
	2000-02-08
专利权人	AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITED
公开日期	2000-02-08
授权国家	美国
专利类型	授权发明
摘要	A compact multiwavelength laser arrangement includes a reflective waveguide grating combined with two arrays of reflecting waveguide elements located in separate focal regions formed by the grating. The laser uses a folded imaging arrangement with nonoverlapping focal regions that eliminates unwanted resonances of previous reflective arrangements. The laser's advantages over existing transmissive laser arrangements include reduced size, faster response time, and increased number of wavelengths.
其他摘要	紧凑的多波长激光器装置包括反射波导光栅，其与位于由光栅形成的单独聚焦区域中的两个反射波导元件阵列组合。激光器使用具有非重叠焦点区域的折叠成像装置，其消除了先前反射装置的不期望的共振。激光器相对于现有透射激光器装置的优点包括尺寸减小，响应时间更快以及波长数量增加。
主权项	A multiwavelength laser comprising a laser cavity including a reflective grating, at least a first reflective active element and a plurality of second reflective active elements, the reflective grating having an array of reflecting arms having lengths that vary in a non-linear manner so as to produce a focal length that varies as a function of wavelength; said reflective grating having a first and second focal curves through a first and second focal point, respectively, such that the curve through either focal point is the locus of the images produced by a particular order of the grating when illuminated from the other focal point, said at least first reflective active element is located at the first focal curve in the vicinity of the first focal point, a plurality of second reflective active elements are located on the second focal curve in the vicinity of the second focal point; and wherein the first and second focal curves are located at substantially different distances from said reflective grating so that any direct reflection of wavelength is sufficiently reduced and the focal length variation with wavelength changes is sufficiently strong so that any wavelength in any passband outside a selected free spectral range passband is substantially reduced when reflected back from said plurality of second reflective active elements to said at least a first reflective active element.
申请日期	1999-02-02
专利号	US6023480
专利状态	失效
申请号	US09/241933
公开（公告）号	US6023480
IPC 分类号	H01S5/026 \| H01S5/00 \| G02B6/34 \| H01S5/40 \| H01S3/10
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/181661/45859
专题	半导体激光器专利数据库
作者单位	AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITED
推荐引用方式 GB/T 7714	DRAGONE, CORRADO. Fast tunable multiwavelength laser with folded imaging arrangement of nonoverlapping focal regions. US6023480[P]. 2000-02-08.

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