Optical system for coupling light into a waveguide

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	Optical system for coupling light into a waveguide
其他题名	Optical system for coupling light into a waveguide
	SONG, JEONGHWAN; VAN DORPE, POL; FIORENTINO, GIUSEPPE; SOUSSAN, PHILIPPE; ROTTENBERG, XAVIER
	2018-03-14
专利权人	MIDIAGNOSTICS NV
公开日期	2018-03-14
授权国家	欧洲专利局
专利类型	发明申请
摘要	There is provided an optical system for coupling light into a waveguide. The optical system comprising a coupler arranged at a portion of the waveguide. The coupler has a surface with a grating structure for directing light into the waveguide formed therein. A cladding layer embeds the coupler and an optical path changing structure is formed in the cladding layer. The optical path changing structure has a refractive surface and a reflective surface, each forming an acute angle with respect to the surface of the coupler. Light which enters the optical path changing structure through the refractive surface will be refracted and directed towards the reflective surface. The reflective surface is arranged to reflect the light such that it is directed towards the grating structure of the coupler along a direction suitable for efficient coupling of light into the waveguide.
其他摘要	提供了一种用于将光耦合到波导中的光学系统。该光学系统包括设置在波导的一部分处的耦合器。耦合器具有带有光栅结构的表面，用于将光引导到其中形成的波导中。包层嵌入耦合器，并且在包层中形成光路改变结构。光路改变结构具有折射表面和反射表面，每个表面相对于耦合器的表面形成锐角。通过折射表面进入光路改变结构的光将被折射并指向反射表面。反射表面布置成反射光，使得它沿着适于有效地将光耦合到波导中的方向指向耦合器的光栅结构。
主权项	An optical system (100) for coupling light into a waveguide, comprising: a waveguide (102) having a portion (104) for guiding light along a first direction (106), a coupler (108) arranged at said portion (104) of the waveguide (102), wherein the coupler (108) has a surface (110) with a grating structure (111) formed therein for directing light into the waveguide (102), the surface (110) having a normal (112) which is orthogonal to the first direction (106), and a cladding layer (140) embedding the coupler (108), the cladding layer (140) having an optical path changing structure (120) formed therein, the optical path changing structure (120) having a refractive surface (122) and a reflective surface (124), each forming an acute angle (α,β) with respect to the surface (110) of the coupler (108), wherein, for light which enters the optical path changing structure (120) through the refractive surface (122) along a second direction (130) which is orthogonal to said normal, the refractive surface (122) is arranged to refract the light such that it is directed towards the reflective surface (124) along a third direction (132) which is different from the second direction (130), and wherein the reflective surface (124) is arranged to reflect the light of the third direction (132) such that it is directed towards the grating structure (111) of the coupler (108) along a fourth direction (134).
申请日期	2017-08-31
专利号	EP3293555A1
专利状态	申请中
申请号	EP2017188766
公开（公告）号	EP3293555A1
IPC 分类号	G02B6/42 \| G02B6/124 \| G02B6/34
专利代理人	-
代理机构	AWAPATENT AB
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/54815
专题	半导体激光器专利数据库
作者单位	MIDIAGNOSTICS NV
推荐引用方式 GB/T 7714	SONG, JEONGHWAN,VAN DORPE, POL,FIORENTINO, GIUSEPPE,et al. Optical system for coupling light into a waveguide. EP3293555A1[P]. 2018-03-14.