We offer ruled and holographic diffraction gratings 我們提供常規和全息衍射光柵。
Through research discovery the surface quality to be good , the performance fine rectangle plastic diffraction gratings 通過測試發現,采用這種方法可以復制出表面質量良好、性能優良的塑料矩形光柵。
Among all kinds of demultiplexers , etched diffraction gratings ( edgs ) are regarded as one of the most potential types of planar waveguide wdm devices . this phd thesis focuses on the design , simulation and fabrication of edgs for optical communications 蝕刻衍射光柵是采用平面波導技術制成的集成密集波分復用器件,它具有信道損耗低、串擾小、器件尺寸小、容易擴展信道、制作和封裝工藝相對簡單等優點。
The polarization - dependent diffraction characteristics of the metallic echelle and the total internal reflection ( tir ) types of diffraction gratings are studied , and optimal design method based on the hybrid diffraction method is presented 針對目前衍射光柵器件在損耗、偏振敏感性等方面的不足,本文對金屬反射型以及內全反射型凹面光柵的偏振相關的衍射特性進行了矢量分析,并基于混合衍射方法提出了更為準確有效的優化設計方法。
The design of dgwfs and the quadratically distorted diffraction gratings is introduced firstly in chapter 1 . secondly , based on the prevenient algorithms , the phase retrieval for the novel dgwcs is discussed by comparison , also more analysis is made by examples in chapter 2 第二章在總結、研究和改進前人理論方法的基礎上,總結了適合光柵型波前曲率傳感器相位恢復的三種算法,并作了詳細的理論推導、分析和舉例說明,完善了光柵波前曲率傳感器的相位恢復理論。