Research on non-linearity correction of 2D-PSD

Xiawei Zheng; Sihai Chen; Wei Chen; Xin Wu; Sihua Xiang

doi:10.1117/12.843121

29 October 2009 Research on non-linearity correction of 2D-PSD

Xiawei Zheng, Sihai Chen, Wei Chen, Xin Wu, Sihua Xiang

Proceedings Volume 7514, Photonics and Optoelectronics Meetings (POEM) 2009: Fiber Optic Communication and Sensors; 75140Y (2009) https://doi.org/10.1117/12.843121
Event: Photonics and Optoelectronics Meetings 2009, 2009, Wuhan, China

Abstract

PSD(Position Sensitive Detector) is a kind of electrophotonic detector based on lateral photoeffect. PSD is widely used in non-contact measurement as it's highly sensitive to the position of incident light. But, it suffers from non-linearity because of nonuniform surface resistance which reduces the measuring precision and reliability. In this paper, The non-linear error of 2D-PSD(Two-dimensional PSD) is partly corrected using algorithm for duo-linear interpolation based on LabVIEW(Laboratory Virtual Instrument Engineering Workbench). The corrected result shows that the linearity of 2D-PSD is greatly improved without increasing the complexity of hardware. After the non-linearity correction, the usable area of PSD is extended and the precision of the measurement system is improved.

Citation Download Citation

Xiawei Zheng, Sihai Chen, Wei Chen, Xin Wu, and Sihua Xiang "Research on non-linearity correction of 2D-PSD", Proc. SPIE 7514, Photonics and Optoelectronics Meetings (POEM) 2009: Fiber Optic Communication and Sensors, 75140Y (29 October 2009); https://doi.org/10.1117/12.843121

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