The study of interferometer spectrometer based on DSP and linear CCD

Hua Kang; Yuexiang Peng; Xinchen Xu; Xiaoqiao Xing

doi:10.1117/12.868435

11 November 2010 The study of interferometer spectrometer based on DSP and linear CCD

Hua Kang, Yuexiang Peng, Xinchen Xu, Xiaoqiao Xing

Proceedings Volume 7855, Optical Metrology and Inspection for Industrial Applications; 78551D (2010) https://doi.org/10.1117/12.868435
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

In this paper, general theory of Fourier-transform spectrometer and polarization interferometer is presented. A new design is proposed for Fourier-transform spectrometer based on polarization interferometer with Wollaston prisms and linear CCD. Firstly, measured light is changed into linear polarization light by polarization plate. And then the light can be split into ordinary and extraordinary lights by going through one Wollaston prism. At last, after going through another Wollaston prism and analyzer, interfering fringes can be formed on linear CCD behind the analyzer. The linear CCD is driven by CPLD to output amplitude of interfering fringes and synchronous signals of frames and pixels respectively. DSP is used to collect interference pattern signals from CCD and the digital data of interfering fringes are processed by using 2048-point-FFT. Finally, optical spectrum of measured light can be display on LCD connected to DSP with RS232. The spectrometer will possess the features of firmness, portability and the ability of real-time analyzing. The work will provide a convenient and significant foundation for application of more high accuracy of Fourier-transform spectrometer.

Citation Download Citation

Hua Kang, Yuexiang Peng, Xinchen Xu, and Xiaoqiao Xing "The study of interferometer spectrometer based on DSP and linear CCD", Proc. SPIE 7855, Optical Metrology and Inspection for Industrial Applications, 78551D (11 November 2010); https://doi.org/10.1117/12.868435

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available