Optical filtering characteristics for Gaussian beam passing through of diffractive gratings

QU Wen-jun; XIE Hui; HU Qiang-gao; SUN Li-ping

doi:10.3969/j.issn.1001-806.2012.04.027

For studying the optical filtering of Gaussian beam passing through diffractive gratings,the Fraunhofer diffraction equation of Gaussian beam was deduced based on scalar diffraction theory,and then the filtering characteristics of multi-wavelength Gaussian beam was analyzed,which were compared with those of parallel plane light.It was found that the optical intensity distribution for a single wavelength Gaussian beam was related to the factor T,and the band-width for multi-wavelength Gaussian beam was narrowed.This theory is helpful for optical filter design and optimization.

Optical filtering characteristics for Gaussian beam passing through of diffractive gratings

Corresponding author: HU Qiang-gao, qianggao.hu@accelink.com;

1. Accelink Technologies Co.Ltd., Wuhan 430074, China;

2. Wuhan Research Institute of Posts and Telecommunications, Wuhan 430074, China;

3. State Key Laboratory of Optical Communication Technologies and Networks, Wuhan 430074, China

Received Date: 2011-10-27

Accepted Date: 2011-11-21

Available Online: 2012-07-25

Abstract: For studying the optical filtering of Gaussian beam passing through diffractive gratings,the Fraunhofer diffraction equation of Gaussian beam was deduced based on scalar diffraction theory,and then the filtering characteristics of multi-wavelength Gaussian beam was analyzed,which were compared with those of parallel plane light.It was found that the optical intensity distribution for a single wavelength Gaussian beam was related to the factor T,and the band-width for multi-wavelength Gaussian beam was narrowed.This theory is helpful for optical filter design and optimization.

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Reference (10)

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Optical filtering characteristics for Gaussian beam passing through of diffractive gratings

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References

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