Addressing fiber Bragg grating sensors with wavelength-swept pulse fiber laser and analog electrical switch
| Autor: | Ping Shum, You Long Yu, Ruoming Li |
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| Rok vydání: | 2011 |
| Předmět: |
PHOSFOS
Materials science business.industry Polarization-maintaining optical fiber Long-period fiber grating Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Optics Fiber Bragg grating Fiber optic sensor Fiber laser Dispersion-shifted fiber Electrical and Electronic Engineering Physical and Theoretical Chemistry Plastic optical fiber business |
| Zdroj: | Optics Communications. 284:1561-1564 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/j.optcom.2010.11.072 |
| Popis: | A pulse train with a wavelength dependent time sequence is generated in a fiber laser configuration, which contains a cascaded wavelength-division-multiplexing (WDM) fiber Bragg grating (FBG) array and a tunable F-P filter. By distributing pulses to corresponding channels with a 1 × N analog electrical switch, a novel FBG sensors interrogation technique with advantages of high signal-to-noise ratio (SNR) and high interrogation speed is experimentally demonstrated. Then, a FBG sensing system based on this interrogation technique and the mature unbalanced scanning Michelson interferometer (USMI) demodulation technique is realized. The system has shown a sensitivity of 1.610°/μe, for the 1555 nm FBG, which agrees well with the theoretical value of 1.674°/μe. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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