The spectroscopy is the ultimate way for chemical analysis. This paper mainly describes the idea of an air-sensitive sensor based on MEMS technology, and more over, a photonic crystal (PC) beam splitter was designed, which can achieve high resolution beam steering, and this improves the resolution of the sensor. The paper offers a new idea and lays the foundationfor the novel beam splitter that applied to many optical systems.%本文利用微机电系统技术实现气敏传感器的主要思想,设计了基于超棱镜效应的光子晶体分光系统,它能够实现高精度的分光,使得光谱仪的分辨率有很大程度的提高,并且为应用于许多光学系统的新型分光元件的研究提供新的思路和基础.
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