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	Laser diode module
	OSHIMA TSUTOMU; MIYAKE YOSHIO
	1989-08-21
著作权人	MITSUBISHI ELECTRIC CORP
专利号	JP1989207709A
国家	日本
文献子类	发明申请
其他题名	Laser diode module
英文摘要	PURPOSE:To easily adjust the title laser diode module at the time of assembling it and to improve its temperature characteristics by setting up a single mode fiber on a position around a Gaussian image face generated by a lens in the reverse direction against the position of a circle of least confusion generated by the lens. CONSTITUTION:Beams radiated from a laser diode LD1 is converged by the rod lens 2 and the converged beams 4 draw the shown loci respectively, so that a Gaussian image face 5 and a circle 6 of least confusion are formed. The single mode fiber is fixed on a set position 7 e.g. by adjusting the quantity of respective beams projected around the Gaussian image face 5 in the reverse direction against the circle 6 of least confusion and made incident into the single mode fiber 3 at a position where no divergent interference pattern is generated. Since the quantity of respective beams made incident into the single mode fiber at the position where no divergent interference pattern is generated to fix the single mode fiber, a tolerance range for optical axis matching can be expanded. In addition, a change in coupling efficiency to be generated by the variation of wavelength due to the temperature change of the LD1 can be reduced.
公开日期	1989-08-21
申请日期	1988-02-16
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/70829]
专题	半导体激光器专利数据库
作者单位	MITSUBISHI ELECTRIC CORP
推荐引用方式 GB/T 7714	OSHIMA TSUTOMU,MIYAKE YOSHIO. Laser diode module. JP1989207709A. 1989-08-21.

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