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http://dx.doi.org/10.3807/COPP.2018.2.6.519

A Transverse Load Sensor with Reconfigurable Measurement Accuracy Based on a Microwave Photonic Filter  

Chen, Han (School of Instrument Science and Engineering, Southeast University)
Li, Changqing (School of Instrument Science and Engineering, Southeast University)
Min, Jing (School of Instrument Science and Engineering, Southeast University)
Publication Information
Current Optics and Photonics / v.2, no.6, 2018 , pp. 519-524 More about this Journal
Abstract
We propose a transverse load sensor with reconfigurable measurement accuracy based on a microwave photonic filter in the $K_u$ band, incorporating a polarization-maintaining fiber Bragg grating. A prototype sensor with a reconfigurable measurement accuracy tuning range from 6.09 to 9.56 GHz/(N/mm), and corresponding minimal detectable load range from 0.0167 to 0.0263 N/mm, is experimentally demonstrated. The results illustrate that up to 40% manufacturing error in the grating length can be dynamically calibrated to the same corresponding measurement accuracy for the proposed transverse load sensor, by controlling the semiconductor optical amplifier's injection current in the range of 154 to 419 mA.
Keywords
Fiber optics sensors; Filters; Fiber Bragg gratings; Semiconductor optical amplifiers;
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