Laser module provided with light isolator

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	Laser module provided with light isolator
其他题名	Laser module provided with light isolator
	ONODA YOSHITO; CHIKAMA TERUMI; GOTO MASAMI; WATANABE SHIGEKI
	1987-02-21
专利权人	FUJITSU LTD
公开日期	1987-02-21
授权国家	日本
专利类型	发明申请
摘要	PURPOSE:To improve efficiency of optical coupling by making an end face of a convergent rod lens of a laser module having a light isolator columnar side face like form. CONSTITUTION:In a laser module having a light isolator made by arranging a semiconductor laser 1, an incident side lens 5, the first polarizing prism 3 having an incident face inclined to the optic axis of the semiconductor laser 1, a Faraday rotator 2, the second polarizing prism 4 having an emission face inclined to the optic axis of the semiconductor laser 1 and optical fiber 7 successively, the face P1 of incidence of a convergent rod lens 16 is formed to a form of side face of a column having desired radius that intersects at right angles to axial center of the rod lens 16. As the face P1 of incidence of the convergent rod lens 16 is formed to a form of side face of a column, a light beam having elliptical sectional form emitted from the second polarizing prism 4 is converged larger in the direction of major axis than that of minor axis and becomes a light beam having circular sectional form. Accordingly, it becomes possible to converge the light to a point at the end face of the fiber 7.
其他摘要	目的：通过制作具有光隔离器柱状侧面形状的激光模块的会聚棒透镜的端面来提高光学耦合的效率。组成：在具有通过布置半导体激光器1，入射侧透镜5，具有倾斜于半导体激光器1的光轴的入射面的第一偏振棱镜3，法拉第旋转器2制成的光隔离器的激光器模块中，第二偏振棱镜4具有连续地倾斜于半导体激光器1和光纤7的光轴的发射面，会聚棒透镜16的入射面P1形成为具有所需半径的柱的侧面形状。由于会聚棒透镜16的入射面P1形成为柱的侧面形状，所以从第二偏振棱镜发射的具有椭圆形截面形状的光束与棒状透镜16的轴向中心成直角相交。图4所示的光轴在长轴方向上比短轴方向收敛得大，并且成为具有圆形截面形状的光束。因此，可以将光会聚到光纤7的端面处的点。
主权项	-
申请日期	1985-08-19
专利号	JP1987040423A
专利状态	失效
申请号	JP1985181213
公开（公告）号	JP1987040423A
IPC 分类号	G02B27/28 \| G02B6/42 \| H01S5/00 \| H01S3/18
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/181661/62995
专题	半导体激光器专利数据库
作者单位	FUJITSU LTD
推荐引用方式 GB/T 7714	ONODA YOSHITO,CHIKAMA TERUMI,GOTO MASAMI,et al. Laser module provided with light isolator. JP1987040423A[P]. 1987-02-21.

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