Optical waveguide structure and its manufacture

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	Optical waveguide structure and its manufacture
其他题名	Optical waveguide structure and its manufacture
	MOROSAWA KENICHI; NAKAMURA HITOSHI; KATSUYAMA TOSHIO; INOUE HIROAKI; MATSUMURA HIROYOSHI; SAKANO SHINJI; KURODA TAKARO
	1988-07-06
专利权人	HITACHI LTD
公开日期	1988-07-06
授权国家	日本
专利类型	发明申请
摘要	PURPOSE:To efficiently couple each optical device, or elements in an optical integrated circuit, by providing an incident end whose thickness becomes thin gradually, or an exiting end whose thickness becomes thick gradually, which is placed on the same optical axis. CONSTITUTION:With respect to an optical waveguide, an area of an end face is enlarged in the coupling part of an optical fiber and an element, and also, the optical waveguide is removed so that the optical path length of the interval of a flat end face of an element in an optical integrated circuit becomes about the integer multiple of half of the wavelength to be used. In such a way, since the waveguide is widened in the thickness direction in a coupling part to the optical fiber, coupling can be easily executed. Also, in the case of removing the optical waveguide, the effective refractive index of the optical waveguide of the element and the effective refractive index of an optically coupled element are aligned to the same degree, an air-gap between the optical waveguides of these two elements becomes an etalon and handled as a general multiple reflection, therefore, when the optical path length of this air-gap is the integer multiple of half of the wavelength, in the case of a plane wave, a reflection factor becomes '0', and the coupling efficiency of 100% can be obtained.
其他摘要	用途：通过提供厚度逐渐变薄的入射端，或者厚度逐渐变厚的出射端，放置在同一光轴上，有效地耦合每个光学器件或光学集成电路中的元件。组成：对于光波导，端面的区域在光纤和元件的耦合部分扩大，并且，光波导被移除，使得光路的长度间隔的光程长度光学集成电路中元件的面大约是要使用的波长的一半的整数倍。以这种方式，由于波导在与光纤的耦合部分中沿厚度方向加宽，因此可以容易地执行耦合。而且，在去除光波导的情况下，元件的光波导的有效折射率和光耦合元件的有效折射率对准相同的程度，这两个光波导之间的气隙。因此，当该气隙的光程长度是波长的一半的整数倍时，在平面波的情况下，反射系数变为“0”，因此，元件成为标准具并作为一般的多次反射处理。并且可以获得100％的耦合效率。
主权项	-
申请日期	1986-12-26
专利号	JP1988163407A
专利状态	失效
申请号	JP1986308509
公开（公告）号	JP1988163407A
IPC 分类号	G02B6/122 \| G02B6/12 \| H01S5/00 \| H01S3/18
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/181661/65789
专题	半导体激光器专利数据库
作者单位	HITACHI LTD
推荐引用方式 GB/T 7714	MOROSAWA KENICHI,NAKAMURA HITOSHI,KATSUYAMA TOSHIO,et al. Optical waveguide structure and its manufacture. JP1988163407A[P]. 1988-07-06.

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