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光纤干涉成像阵列全息相位校正研究

Holographic Phase Calibration for Fiber Interferometric Imaging Array

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摘要

针对光纤传输和干涉成像阵列中的相位误差, 提出了一种基于特殊光子晶体的全息相位校正方法。首先分析了光纤干涉阵列成像的基本原理和相位信息的传输过程, 以一维线性阵列建立成像系统相位误差模型, 通过对参考光束和探测器前的快门交替打开和闭合, 来分别实现在晶体上写入由光纤阵列的出射光束与参考光束干涉形成的含有相位误差的光栅函数, 和光纤中出射光束被该光栅衍射和相位偏移以消除相位误差, 从理论上分析了上述基于光子晶体的全息法相位校正原理。最后采用所建立的含有相位误差的干涉阵列进行成像仿真, 对未加校正、采用本文方法和采用冗余基线校正的结果进行了对比分析。

Abstract

A new approach based on holographic technique was proposed with photorefractive crystal for phase error calibration in fiber interferometric imaging arrays. The principle of fiber interferometric imaging arrays and the transmission of phase information were discussed first. The model of phase error was set up for a one dimension linear array system. The particular process of holographic phase calibration with photorefractive crystal was as follows: the shutter before the reference beam and the shutter before the CCD camera were kept on and off by turns, which respectively made for the diffractive grating writing formed by interfering of fiber beam and reference beam, and for the diffraction and phase shift of the fiber beam. Finally the imaging simulation using un-calibrated, the purposed approach and the redundant baseline spacing calibration corresponded was compared based on the 1D fiber interferometric array with phase errors.

Newport宣传-MKS新实验室计划
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中图分类号:O438

所属栏目:傅里叶光学与光信号处理

基金项目:国家863计划(2007AA12Z100)和武器装备探索研究项目(7130730)资助课题。

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作者单位    点击查看

何云涛:北京航空航天大学电子信息工程学院, 北京 100191
江月松:北京航空航天大学电子信息工程学院, 北京 100191
何烨:北京航空航天大学电子信息工程学院, 北京 100191

联系人作者:何云涛(taoyunhe@ee.buaa.edu.cn)

备注:何云涛(1982—), 男, 博士研究生, 主要从事被动综合孔径成像方面的研究。

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引用该论文

He Yuntao,Jiang Yuesong,He Ye. Holographic Phase Calibration for Fiber Interferometric Imaging Array[J]. Acta Optica Sinica, 2008, 28(s2): 38-42

何云涛,江月松,何烨. 光纤干涉成像阵列全息相位校正研究[J]. 光学学报, 2008, 28(s2): 38-42

被引情况

【1】黄永明,江月松,何云涛. 上变频毫米波辐射计成像系统的工作性能. 中国激光, 2009, 36(s2): 326-330

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