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	Semiconductor light emitting device
	SEKI HAJIME
	1987-12-12
著作权人	FUJITSU LTD
专利号	JP1987286296A
国家	日本
文献子类	发明申请
其他题名	Semiconductor light emitting device
英文摘要	PURPOSE:To make it possible to perform high speed modulation readily without using external modulation, by imparting a potential to electrodes, thereby yielding difference in refractive indexes of two lightguides, and selectively taking out two light beams, which are oscillated in the two lightguides and have phase difference, into an output lightguide. CONSTITUTION:On the a substrate 1, the following parts are provided: two parallel lightguides 2 and 3, which are optically coupled; a coupling device 4, where the two lightguides 2 and 3 are coupled; an output lightguide 5 connected to the coupling device 4; and electrodes 6 on the surface of the substrate. Two light beams having phase difference are oscillated in the two lightguides 2 and 3, which serve the roles of laser units. When a potential is imparted to the electrodes 6, the difference in refractive indexes is yielded between the two lightguides 2 and 3. Then either of the two light beams is selectively taken out by said optical switching action and put into the output lightguide 5. The light is emitted to the outside of the substrate In order to make large-capacity transmission possible in this way, phase modulation characterized by excellent high-speed property and transmission efficiency of the optical switch utilizing the electroptical effect is used.
公开日期	1987-12-12
申请日期	1986-06-04
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/70708]
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	SEKI HAJIME. Semiconductor light emitting device. JP1987286296A. 1987-12-12.

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