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Application of ultra-small gradient-index fiber probe in spectrum analyzer
Author(s): Chi Wang; Yue Zhang; Jianmei Sun; Chenye Yang; Xinqun Luan; Yingjie Yu
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Paper Abstract

In order to improve the working performance of the optical fiber spectrum analyzer, a spectrum analyzer with an ultrasmall gradient-index (GRIN) fiber probe was studied. The theoretical model of this spectrum analyzer was established and a near-infrared spectrum analyzer with an ultra-small GRIN fiber probe was constructed. The performance of the analyzer was demonstrated using a narrow bandpass filter. The experimental results show that the spectrum analyzer with the GRIN fiber probe can obtain higher output power than that with the single-mode fiber probe at the same distance. In addition, the spectrum analyzer with the GRIN fiber probe still has good performance within the range twice the working distance of the GRIN fiber probe, which is near 1 mm. However, the system with the single-mode probe can only work within the range of 0.4 mm. The results demonstrate that the spectrum analyzer with the GRIN fiber probe has better working performance.

Paper Details

Date Published: 16 October 2019
PDF: 6 pages
Proc. SPIE 11205, Seventh International Conference on Optical and Photonic Engineering (icOPEN 2019), 112050X (16 October 2019); doi: 10.1117/12.2541905
Show Author Affiliations
Chi Wang, Shanghai Univ. (China)
Yue Zhang, Shanghai Univ. (China)
Jianmei Sun, Shanghai Univ. (China)
Chenye Yang, Shanghai Univ. (China)
Xinqun Luan, Science and Technology on Near-surface Detection Lab. (China)
Yingjie Yu, Shanghai Univ. (China)


Published in SPIE Proceedings Vol. 11205:
Seventh International Conference on Optical and Photonic Engineering (icOPEN 2019)
Anand Asundi; Motoharu Fujigaki; Huimin Xie; Qican Zhang; Song Zhang; Jianguo Zhu; Qian Kemao, Editor(s)

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