摘要
以1×2(输入端为一列2 000根光纤,输出端为两列1 000根光纤)光纤图像分割器为例,分析了器件在传输图像过程中产生的四种损耗(吸收损耗、全反射损耗、散射损耗、端面菲涅耳损耗),并在理论上计算出以波长λ=632.8 nm的H e-N e激光做光源时器件的整体透过率为54.56%,与实验所测值51.46%基本吻合,从而证明了自行设计测试装置的可行性。最后给出了提高光纤图像分割器透过率需遵循的基本原则。
High transmission rate of the fiber-optic slicer is decisive to its application in spectrograph. As an example, the 1× 2 fiber-optic imager slicer is developed and four types of loss occurred during light signals transmitting is analyzed. At the wavelength of 632.8 nm emitted by He-Ne laser, the transmission rate of the device is tested to be 51.46~, which is near to 54. 56~/4o calculated based on the principle of light transmitting considering the four types of loss mentioned above. Thus the testing system is proved to be feasibility. The rule of how to improve the transmission rate of the fiber-optic is given eventually.
出处
《光电子技术》
CAS
2008年第2期93-96,100,共5页
Optoelectronic Technology
基金
应用光学国家重点实验室开放基金资助
关键词
光纤图像分割器
透过率
损耗
测试
fiber-optic imager slicer
transmission rate
loss
testing
