Comparation of spectrum characteristics between f - p interferencemeter with gain medium and diffraction grating spectrometer 干涉仪和衍射光栅光谱仪的光谱特性对比
When the laser beam goes through the diffraction grating , it is split up into a central bright beam plus a number of side beams 当激光束射入衍射光栅后，被分成一个中间的明亮光束和一些处于旁边的光束。
The above two types of diffraction grating based devices are studied , which much emphasis on simulation , numerical analysis and optimal design 本文针对上述两种应用对衍射光栅型器件的模拟、分析及优化设计展开了研究。
Then , the kirchhoff scalar diffraction theory is used to derive the scatter field of the edo grating and the simulation model is presented 并利用基尔霍夫标量衍射理论导出了edg光栅散射场的公式，建立了对蚀刻衍射光栅的模拟模型。
As the key device of a dwdm system , etching diffraction grating ( edo ) is one of the most potential types of planar waveguide dwdm devices 作为波分复用中最关键的器件，蚀刻衍射光栅( edg )是平面波导密集波分复用器件中很有发展潜力的一种。
When polychromatic light reflects from or passes through a diffraction grating it is dispersed into many rays , each of a single wavelength or color 当多色光从衍射光栅反射或穿过衍射光栅时，就会分成多种发射光线，每一种都有各自的波长或颜色。
Plane diffraction grating , logarithmic amplifier and stable constant - current source are used in the system , thus the performance of the instrument is enhanced significantly and the cost is reduced 系统采用了平面衍射光栅、专用阵列探测器、对数放大器以及高稳定恒流源，有效地提高了仪器的整体性能，同时降低了生化分析仪的成本。
In optics communications , integrated diffraction grating devices based on the planar lightwave circuit ( plc ) technology are one of the most important solutions for the wavelength division multiplexing ( wdm ) technology 在光通信领域，基于平面波导技术的集成型衍射光栅器件在密集波分复用系统中以其优异的性能成为了波分复用器件的主要发展方向之一。
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 蚀刻衍射光栅是采用平面波导技术制成的集成密集波分复用器件，它具有信道损耗低、串扰小、器件尺寸小、容易扩展信道、制作和封装工艺相对简单等优点。
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 针对目前衍射光栅器件在损耗、偏振敏感性等方面的不足，本文对金属反射型以及内全反射型凹面光栅的偏振相关的衍射特性进行了矢量分析，并基于混合衍射方法提出了更为准确有效的优化设计方法。
