QQ客服 官方微博 反馈留言

	Module of laser diode
	ONODA YOSHITO; CHIKAMA TERUMI; GOTOU MASAMI
	1985-12-03
著作权人	FUJITSU KK
专利号	JP1985244088A
国家	日本
文献子类	发明申请
其他题名	Module of laser diode
英文摘要	PURPOSE:To miniaturize a laser diode module and reduce cost thereof by arranging the optical axis of a duble refracting lens so as to run parallel with the end surface of a laser diode and be made perpendicular to a junction surface and disposing an optical fiber at the position of image formation of ordinary rays of the double refracting lens. CONSTITUTION:The optical axis 4 of a double refracting lens 2 is arranged so as to run parallel with the end surface 1a of a laser diode and be made perpendicular to a junction surface 1b in the laser diode through a coupling system using one lens. An optical fiber 3 is disposed at the position of image formation of ordinary rays 7. When laser beams from the laser diode 1 are projected to the double refracting lens 2, the positions of image formation of ordinary rays 7 and extraordinary rays 8 change, and extraordinary rays 8 are difficult to be coupled with the optical fiber 3 in comparison with ordinary rays 7, thus improving an excinction ratio. When a constant-polarization fiber is used as the optical fiber, the extinction ratio after a projection from the fiber is further enhanced because the propagation of extraordinary rays can be prevented. Since a polarizer is not employed, a module can be miniaturized and cost thereof is reduced.
公开日期	1985-12-03
申请日期	1984-05-18
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/62923]
专题	半导体激光器专利数据库
作者单位	FUJITSU KK
推荐引用方式 GB/T 7714	ONODA YOSHITO,CHIKAMA TERUMI,GOTOU MASAMI. Module of laser diode. JP1985244088A. 1985-12-03.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。