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Proceedings Paper

Simplified photonic approach for high-coding-efficiency, digitalized microwave frequency measurement using multiple optical filter arrays with different FSRs
Author(s): Bing Lu; Wei Pan; Xihua Zou; Peixuan Li; Xinkai Liu; Lianshan Yan; Bin Luo
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Paper Abstract

A simplified photonic approach to microwave frequency measurement with digital outputs based on multiple parallel optical filter arrays, is proposed and experimentally demonstrated. In the proposed approach, multiple optical phase-shifted filter arrays in parallel with different free spectral ranges (FSRs) are designed to obtain digitalized results in the form of binary code with high-coding efficiency and fine measurement resolution. In particular, compared with previous approaches, larger tolerances on the phase shifts of optical filter arrays are provided in the proposed approach having the same coding efficiency and resolution. Therefore, the proposed system is greatly simplified and robust to noise. A proof-of-concept experiment is performed when two optical filter arrays are used. 8-bit binary digitalized results with a 5-bit effective number and a 2-GHz measurement resolution are obtained in the range from 10 to 40GHz.

Paper Details

Date Published: 13 November 2014
PDF: 9 pages
Proc. SPIE 9279, Real-time Photonic Measurements, Data Management, and Processing, 92790M (13 November 2014); doi: 10.1117/12.2071691
Show Author Affiliations
Bing Lu, Southwest Jiaotong Univ. (China)
Wei Pan, Southwest Jiaotong Univ. (China)
Xihua Zou, Southwest Jiaotong Univ. (China)
Peixuan Li, Southwest Jiaotong Univ. (China)
Xinkai Liu, Southwest Jiaotong Univ. (China)
Lianshan Yan, Southwest Jiaotong Univ. (China)
Bin Luo, Southwest Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 9279:
Real-time Photonic Measurements, Data Management, and Processing
Bahram Jalali; Ming Li; Keisuke Goda; Mohammad Hossein Asghari, Editor(s)

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