摘要
报道了一种自行研制的微型光纤光谱仪及其性能测试结果.基于C-T(czerny-turner)成像系统,将通过光纤导入的待测光进行分光后成像于线阵CCD(charge-coupled device)探测器上.采用FPGA(field-pro-grammable gate array)作为主处理器实现CCD的驱动、数据采集与处理,通过USB 2.0接口将数据传送至上位机.根据USB的接口协议及数据格式,编写了一套光谱仪测试软件.利用汞灯作为测试光源,对自制的光纤光谱仪性能进行了仔细分析.结果表明,当采用缝宽为30μm的狭缝时,仪器的波长准确度小于0.3nm,光谱分辨率可达1.1nm.
A homemade miniature fiber optic spectrometer was reported.Based on the Czerny-Turner imaging system,the input light from the fiber was dispersed and imaged on the charge-coupled device(CCD).A field-programmable gate array(FPGA) was used to drive the CCD,deal with the data acquisition,and transmit the data to the personal computer(PC) through the universal serial bus(USB) 2.0 interface.According to the USB-interface protocol and the data format,a set of spectrometer test software was finished.By using a mercury lamp as the test light source,the spectral characteristics of the spectrometer was tested and analyzed.The results show that the wavelength accuracy of the instrument is less than 0.3 nm;and the spectral resolution of spectrometer is 1.1 nm with 30 μm wide slit.
出处
《中国计量学院学报》
2012年第2期115-119,共5页
Journal of China Jiliang University
基金
浙江省自然科学基金资助项目(No.Y1110700)
关键词
光纤光谱仪
电荷耦合元件
光谱
fiber spectrometer
charge-coupled device(CCD)
spectrum
