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	SARUWATARI MASATOSHI; SUGIE TOSHIHIKO
	1986-12-22
著作权人	NIPPON TELEGRAPH & TELEPHONE
专利号	JP1986060596B2
国家	日本
文献子类	授权发明
其他题名	-
英文摘要	PURPOSE:To facilitate fabrication and obtain a highly efficient coupling between a semiconductor laser and a single mode optical fiber by an allowable deviation of position made wider through utilization of a lens system having comparatively long focal length. CONSTITUTION:A laser beam 24 has radii W0I, W0II along vertical and horizontal directions of a junction plane, and a beam is converted in radii by a lens 25 into a beam 26 and futhermore into a beam 28 through a lens 27. If a ratio between focal lengthes f1, f2 of lenses 25, 27 is properly preferred, a conversion of beam radius in an arbitrary magnification is possible. Because a beam radius W0 of a single mode optical fiber has the relation W0>W0II>W0I, f2/f1 is prefered so as to satisfy the relation W0=(W2IXW2II). By this constitution because a necessary mounting accuracy of the first lens 29 is relaxed to be looser 10 times or more than a conventional module, mounting yield is remarkably improved, and highly efficient coupling through the second lens 31 to a single mode optical fiber 13 is obtained.
公开日期	1986-12-22
申请日期	1980-11-10
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/70427]
专题	半导体激光器专利数据库
作者单位	NIPPON TELEGRAPH & TELEPHONE
推荐引用方式 GB/T 7714	SARUWATARI MASATOSHI,SUGIE TOSHIHIKO. -. JP1986060596B2. 1986-12-22.

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