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	Coupling structure between a semiconductor laser and an optical fiber and coupling method thereof
	KURATA, KAZUHIKO
	1995-12-26
著作权人	NEC CORPORATION
专利号	US5479549
国家	美国
文献子类	授权发明
其他题名	Coupling structure between a semiconductor laser and an optical fiber and coupling method thereof
英文摘要	In a coupling structure for directly coupling a semiconductor laser to an optical fiber without using a lens, a coupling structure is provided which is superior in producibility, low in coupling loss and stable in operation of the semiconductor laser, by removing an influence of a return light due to Fresnel reflection from an end face of the optical fiber. A re-combination of the semiconductor laser to an active layer of the optical fiber is prevented by scattering a reflection light at the end face of the optical fiber by positively increasing a surface roughness Rz of the end face of the optical fiber to a range from 0.04 mu m to 0.06 mu m. The end face is formed by cutting the optical fiber with a blade saw having abrasive of particle size in a range from #1000 gauge to #2000 gauge corresponding to a range from 8 mu m to 20 mu m. The end face may be polished with abrasive having size in a rage from #1000 to #2000 gauge.
公开日期	1995-12-26
申请日期	1995-02-22
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/36238]
专题	半导体激光器专利数据库
作者单位	NEC CORPORATION
推荐引用方式 GB/T 7714	KURATA, KAZUHIKO. Coupling structure between a semiconductor laser and an optical fiber and coupling method thereof. US5479549. 1995-12-26.

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