| 利用光栅闪耀特性优化低通滤波器 |
| |
| 引用本文： | 印勇,陈梨,田逢春. 利用光栅闪耀特性优化低通滤波器[J]. 光电工程, 2006, 33(9): 124-127,132 |
| |
| 作者姓名： | 印勇 陈梨 田逢春 |
| |
| 作者单位： | 重庆大学,通信工程学院,重庆,400044;重庆大学,通信工程学院,重庆,400044;重庆大学,通信工程学院,重庆,400044 |
| |
| 摘 要： | 为了滤除有效光信号中的光噪声，本文提出了一种利用光栅的闪耀特性将噪声和有效信号之间的夹角角度差放大，再通过光阑得到有效光信号的方法。通过分析和仿真，使用光栅的1、2级闪耀对入射时微小角度差进行放大比较适宜。放大倍数会随着闪耀光栅的周期的减小而增大。负斜入射角度差的放大效果比正斜入射的效果更好。
|
| 关 键 词： | 闪耀光栅 低通滤波器 夹角放大 |
| 文章编号： | 1003-501X（2006）09-0124-04 |
| 收稿时间： | 2006-02-19 |
| 修稿时间： | 2006-02-192006-06-20 |
Optimization of low-pass filter using blazed grating |
| |
| YIN Yong,CHEN Li,TIAN Feng-chun. Optimization of low-pass filter using blazed grating[J]. Opto-Electronic Engineering, 2006, 33(9): 124-127,132 |
| |
| Authors: | YIN Yong CHEN Li TIAN Feng-chun |
| |
| Affiliation: | College of Communication Engineering, Chongqing University, Chongqing 400044, China |
| |
| Abstract: | In order to filter out the noise contained in effective optical signal, a new memod using me blazed grating to enlarge the angle difference between noise and effective signal, and getting through the iris to get the effective signal was put forward. Through analysis and simulation, it is proven to be suitable for enlarging the small-angle-difference to use the first and the second order blaze of the grating The gain will increase with the period decreasing of the blazed grating. The enlarging effect of negative inclined incidence is better than that of positive inclined incidence. |
| |
| Keywords: | Blazed gratings Low-pass filters Angle-difference enlargements |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
