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Proceedings Paper

Analysis of bandwidth limitation in time-stretch compressive sampling imaging system
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Paper Abstract

Compressive sampling (CS) is an emerging field that provides a new framework for image reconstruction and has potentially powerful implications for the design of optical imaging devices. Single-pixel camera, as a representative example of CS, enables the use of exotic detectors and can operate efficiently across a much broader spectral range than conventional silicon-based cameras. Recently, time-stretch CS imaging system is proposed to overcome the speed limitation of the conventional single-pixel camera. In the proposed system, as ultra-short optical pulses are used for active illumination, the performance of the imaging system is affected by the detection bandwidth. In this paper, we experimentally analyze the bandwidth limitation in the CS-based time-stretch imaging system. Various detector bandwidths are introduced in the system and the mean square error (MSE) is calculated to evaluate the quality of reconstructed images. The results show that the decreasing detection bandwidth leads to serious energy spread of the pulses, where the MSE increases rapidly and system performance is degraded severely.

Paper Details

Date Published: 23 March 2016
PDF: 5 pages
Proc. SPIE 9720, High-Speed Biomedical Imaging and Spectroscopy: Toward Big Data Instrumentation and Management, 972013 (23 March 2016); doi: 10.1117/12.2209437
Show Author Affiliations
Hongwei Chen, Tsinghua Univ. (China)
Zhiliang Weng, Tsinghua Univ. (China)
Qiang Guo, Tsinghua Univ. (China)
Minghua Chen, Tsinghua Univ. (China)
Sigang Yang, Tsinghua Univ. (China)
Shizhong Xie, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 9720:
High-Speed Biomedical Imaging and Spectroscopy: Toward Big Data Instrumentation and Management
Kevin K. Tsia; Keisuke Goda, Editor(s)

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