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Proceedings Paper

Resolution improvement of one-dimensional comb-type PSD by subdivision
Author(s): Meide Lin; Bin Lin; Xunjun Qi; Xiangqun Cao; Ruiqi Long; Chilie Tan
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Paper Abstract

Implementation of a 4 by 1 comb-type Position sensitive detector (PSD) array for position sensing applications is presented. Unlike conventional application, we utilize the method of subdivision to increase the resolution of PSD beyond the feature of photosensitive area, which is presented periodically. To obtain output signal of comb-type PSD, classic grating subdivision circuit is used. Resolution of 6.25μm of comb-type PSD is achieved using optical grating array of a 50μm in pitch and signal power of 3mW. The resolution is limited by the spacing of comb-type PSD and the mismatch of position of PSD array and optical grating array.

Paper Details

Date Published: 19 May 2006
PDF: 6 pages
Proc. SPIE 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 61500B (19 May 2006); doi: 10.1117/12.677971
Show Author Affiliations
Meide Lin, Zhejiang Univ. (China)
Bin Lin, Zhejiang Univ. (China)
Xunjun Qi, Zhejiang Univ. (China)
Anhui Normal Univ. (China)
Xiangqun Cao, Zhejiang Univ. (China)
Ruiqi Long, Zhejiang Univ. (China)
Chilie Tan, Anhui Normal Univ. (China)


Published in SPIE Proceedings Vol. 6150:
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Xun Hou; Jiahu Yuan; James C. Wyant; Hexin Wang; Sen Han, Editor(s)

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