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	Optical directional coupler and its production
	SUGINO TAKASHI; YOSHIKAWA AKIO
	1985-12-23
著作权人	MATSUSHITA DENKI SANGYO KK
专利号	JP1985260006A
国家	日本
文献子类	发明申请
其他题名	Optical directional coupler and its production
英文摘要	PURPOSE:To improve modulating efficiency by forming an optical directional coupler of two layers of semiconductor layers sandwiching an insulator film. CONSTITUTION:An InxGa1-xAsyP1-y optical waveguide layer 7 is grown to 1mum thickness, an SiO2 film 8 to 5,000Angstrom and an InxGa1-xAsyP1-x layer 9 to 5mum thickness, respectively, on an InP substrate 6 and a ridge part 10 is formed on the surface by etching. The propagating light is coupled via the film 8 to the layer 7 beneath said film when light is made incident on the ridge part 10 of the layer 9 on the surface having such structure. The ridge part 10 is formed in order to provide an effective refractive index distribution in a horizontal direction and to confine the propagaging light therein. Ohmic electrodes 11, 12 are then formed on the surface of the part 10 and the substrate 6 side and a bias is applied between the electrodes, by which the propagation constant of each optical waveguide is changed and the intensity of the exit light from each optical waveguide is controlled.
公开日期	1985-12-23
申请日期	1984-06-07
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/84802]
专题	半导体激光器专利数据库
作者单位	MATSUSHITA DENKI SANGYO KK
推荐引用方式 GB/T 7714	SUGINO TAKASHI,YOSHIKAWA AKIO. Optical directional coupler and its production. JP1985260006A. 1985-12-23.

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