Study on the diffraction characteristic of Gaussian beam baffled by a blade in variable optical attenuator

MA Kun~

doi:10.13756/j.gtxyj.2005.02.021

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Study on the diffraction characteristic of Gaussian beam baffled by a blade in variable optical attenuator

- Study on the diffraction characteristic of Gaussian beam baffled by a blade in variable optical attenuator
- Study on Optical communication Issue 2, Pages: 67-70(2005)
- 作者机构：
  
  1.   华中科技大学光电子工程系
  2.   武汉光迅科技股份有限公司
  3.   武汉光迅科技股份有限公司湖北武汉　430074武汉光迅科技股份有限公司湖北武汉430074
  4.   湖北武汉　430074
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2005.02.021
  CLC： TN929.1
- Published：2005，
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[1]马琨,孙军强,李传文,罗勇.可变光衰减器中高斯光束的衍射特性研究[J].光通信研究,2005(02):67-70.

MA Kun~. Study on the diffraction characteristic of Gaussian beam baffled by a blade in variable optical attenuator. [J]. (2):67-70(2005)
[1]马琨,孙军强,李传文,罗勇.可变光衰减器中高斯光束的衍射特性研究[J].光通信研究,2005(02):67-70. DOI： 10.13756/j.gtxyj.2005.02.021.

MA Kun~. Study on the diffraction characteristic of Gaussian beam baffled by a blade in variable optical attenuator. [J]. (2):67-70(2005) DOI： 10.13756/j.gtxyj.2005.02.021.

摘要

应用傅里叶变换法计算了高斯光束经光衰减器的挡光片阻挡后产生的衍射特性

给出了近似的衍射光强分布表达式。根据表达式

绘制了衍射光能量分布图

并实际测试了准直器出射光通过挡光片后的衍射光强分布。对比了数值计算和实际测试结果

最后对结果进行了讨论。

Abstract

This paper firstly calculated the diffraction characteristics of Gaussian beam baffled by a blade of the optical attenuator using Fourier transform

gave an approximate expression of diffracted beam’s intensity distribution. Then the paper draw an image of energy distribation of diffracted beam according to the expression

measured the diffracted beam’s intensity distribation of the （collimator’s） out comming beam having passed the blade

compared the calculated and measured results

and lastly

had a discussion on these results.

关键词

可变光衰减器高斯光束衍射

Keywords

variable optical attenuatorGaussian beamdiffraction

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College of Electronic and Optical Engineering & College of Microelectronics, Nanjing University of Posts and Telecommunications

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