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公开(公告)号:US20150219842A1
公开(公告)日:2015-08-06
申请号:US14416272
申请日:2013-07-24
发明人: Omar Sqalli , David Pires , Guillaume Basset , Martin Stalder
CPC分类号: G02B6/34 , B29D11/00692 , B29L2011/0075 , G02B6/2793 , G02B6/29323 , G02B6/29329 , G02B6/29397
摘要: The present invention concerns a method for constructing a light coupling system wherein a grating is manufactured on the surface of a multimode waveguide and defines the entrance of the waveguide for an incident light beam, said grating comprising a repetition of patterns. The grating is defined by a set of parameters comprising: •grating period (P), separating two adjacent patterns, •grating depth (d) between the highest and the lowest point of the pattern, •incident angle mean value (θ) of the incident light with respect to the waveguide. The method comprises a step of optimization of the set of parameters to obtain an optimized second set of parameters, in order to obtain a transmission efficiency (Ce) of the incident light into said waveguide for the first or the second diffractive order exceeding 35% for unpolarized light, or exceeding 50% for polarized light, at a given wavelength of the incident light.
摘要翻译: 本发明涉及一种用于构造光耦合系统的方法,其中在多模波导的表面上制造光栅并限定入射光束的波导入口,所述光栅包括重复的图案。 光栅由一组参数定义,包括:•光栅周期(P),分离两个相邻图案;•图案的最高点和最低点之间的光栅深度(d);•入射角平均值(? 相对于波导的入射光。 该方法包括优化参数集以获得优化的第二组参数的步骤,以便获得超过35%的第一或第二衍射级的入射到所述波导中的入射光的透射效率(Ce)超过35% 在偏振光的给定波长下,非偏振光或超过50%的偏振光。