Optical amplifier, optical coherence tomography including optical amplifier, and optical amplification method using optical amplifier

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	Optical amplifier, optical coherence tomography including optical amplifier, and optical amplification method using optical amplifier
其他题名	Optical amplifier, optical coherence tomography including optical amplifier, and optical amplification method using optical amplifier
	YOSHIOKA, TAKESHI
	2019-02-28
专利权人	CANON KABUSHIKI KAISHA
公开日期	2019-02-28
授权国家	美国
专利类型	发明申请
摘要	An optical amplifier includes a laminated body including two electrode layers and an active layer disposed therebetween. The laminated body includes a waveguide which guides light in an in-plane direction of the active layer. The light which is incident on the laminated body is amplified and emitted from an end surface in the in-plane direction through the waveguide. At least one of the two electrode layers has an electrode group including at least two electrodes which are disposed separately from each other in a waveguide direction of the waveguide. An amplification factor of the incident light is changeable in accordance with a wavelength of the incident light by independently supplying current to different regions in the active layer using the at least two electrodes. Accordingly, the ASE light including light having an unrequired wavelength may be reduced while sufficient light output intensity is obtained in a required wavelength.
其他摘要	一种光放大器，包括：层叠体，包括两个电极层和设置在其间的有源层。层叠体包括在有源层的面内方向上引导光的波导。入射在层叠体上的光通过波导从面内方向的端面放大并射出。两个电极层中的至少一个具有包括至少两个电极的电极组，所述电极在波导的波导方向上彼此分开设置。通过使用至少两个电极独立地向有源层中的不同区域提供电流，可以根据入射光的波长改变入射光的放大系数。因此，可以减少包括具有不需要的波长的光的ASE光，同时在所需波长中获得足够的光输出强度。
主权项	An optical amplifier comprising: a laminated body including two electrode layers and an active layer disposed between the electrode layers, the laminated body including a waveguide which guides light in an in-plane direction of the active layer, wherein the light which is incident on the laminated body is amplified and emitted from an end surface in the in-plane direction of the laminated body through the waveguide, wherein at least one of the two electrode layers has an electrode group including at least two electrodes which are disposed separately from each other in a waveguide direction of the waveguide, and wherein an amplification factor of the incident light is changeable in accordance with a wavelength of the incident light by independently supplying current to different regions in the active layer using the at least two electrodes.
申请日期	2018-10-25
专利号	US20190059717A1
专利状态	申请中
申请号	US16/170612
公开（公告）号	US20190059717A1
IPC 分类号	A61B3/10 \| A61B3/12 \| G01B9/02 \| H01S5/042 \| H01S5/026 \| H01S5/22 \| H01S5/068 \| H01S5/50
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/181661/62396
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	YOSHIOKA, TAKESHI. Optical amplifier, optical coherence tomography including optical amplifier, and optical amplification method using optical amplifier. US20190059717A1[P]. 2019-02-28.