Distributed feedback semiconductor laser in which light intensity distributions differ in different polarization modes, and driving method therefor

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	Distributed feedback semiconductor laser in which light intensity distributions differ in different polarization modes, and driving method therefor
其他题名	Distributed feedback semiconductor laser in which light intensity distributions differ in different polarization modes, and driving method therefor
	NITTA, JUN; MIZUTANI, NATSUHIKO
	2001-06-26
专利权人	CANON KABUSHIKI KAISHA
公开日期	2001-06-26
授权国家	美国
专利类型	授权发明
摘要	A distributed feedback semiconductor laser includes a cavity extending in a cavity-axial direction. The cavity has a plurality of regions including a first region and a second region arranged along the cavity-axial direction and capable of being independently pumped. The laser further includes a plurality of waveguides with a diffraction grating and an active layer extending along the cavity-axial direction. The waveguides are formed in the regions, respectively, and coupled to each other along the cavity-axial direction. Different first and second polatization modes are defined by the coupled waveguides. The waveguides are constructed such that light intensity distributions along the cavity-axial direction in the first and second regions when pumped are different between the first and second polarization modes.
其他摘要	分布式反馈半导体激光器包括沿腔 - 轴方向延伸的腔。空腔具有多个区域，包括沿腔 - 轴方向布置的第一区域和第二区域，并且能够独立地泵送。激光器还包括多个波导，其具有衍射光栅和沿腔 - 轴方向延伸的有源层。波导分别形成在区域中，并沿腔 - 轴方向彼此耦合。耦合波导定义不同的第一和第二偏振模式。构造波导使得当泵浦时沿第一和第二区域中的腔 - 轴方向的光强度分布在第一和第二偏振模式之间是不同的。
主权项	A distributed feedback semiconductor laser comprising a diffraction grating and an active layer extending in a cavity-axial direction, and including a first region and a second region which are capable of being independently pumped, wherein, in said first region, a first polarization mode light intensity is made greater than a second polarization mode light intensity, and in said second region, the second polarization mode light intensity is made greater than the first polarization mode light intensity, by not providing said first region with a compressively-strained multiple quantum well light guide layer, and providing said second region with a compressively-strained multiple quantum well light guide layer.
申请日期	1998-12-02
专利号	US6252895
专利状态	失效
申请号	US09/203602
公开（公告）号	US6252895
IPC 分类号	H04B10/152 \| H01S5/00 \| H01S5/0625 \| H04B10/155 \| H01S5/32 \| H01S5/34 \| H01S5/062 \| H01S5/12 \| H04B10/40 \| B82Y20/00 \| H01S5/042 \| H04B10/07 \| H04B10/272 \| H04B10/275 \| H04B10/50 \| H04B10/508 \| H04B10/516 \| H04B10/532 \| H04B10/54 \| H04B10/58 \| H04B10/60 \| H04B10/61 \| H01S3/08
专利代理人	-
代理机构	FITZPATRICK,CELLA,HARPER & SCINTO
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/44710
专题	半导体激光器专利数据库
作者单位	CANON KABUSHIKI KAISHA
推荐引用方式 GB/T 7714	NITTA, JUN,MIZUTANI, NATSUHIKO. Distributed feedback semiconductor laser in which light intensity distributions differ in different polarization modes, and driving method therefor. US6252895[P]. 2001-06-26.

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