Fiber loop ringdown humidity sensor
An optical fiber relative humidity (RH) sensor based on the evanescent field-fiber loop ringdown (EF-FLRD) technique is demonstrated. The sensor was placed inside a chamber that provides a humidity reference and is monitored by a humidity meter. The presence of moisture in the chamber changes the re...
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| Veröffentlicht in: | Applied Optics 2016-11, Vol.55 (31), p.8938-8945 |
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| container_title | Applied Optics |
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| creator | Alali, Haifa Wang, Chuji |
| description | An optical fiber relative humidity (RH) sensor based on the evanescent field-fiber loop ringdown (EF-FLRD) technique is demonstrated. The sensor was placed inside a chamber that provides a humidity reference and is monitored by a humidity meter. The presence of moisture in the chamber changes the refractive index of the medium; thus the ringdown time changes due to a change in the EF scattering loss induced in the sensor head. The sensor demonstrated a fast response (∼1 s), high sensitivity, and excellent reproducibility and reversibly. The EF-FLRD sensor can measure RH in a wide dynamic range of 4% to 100% at a constant temperature of 20±1°C. |
| doi_str_mv | 10.1364/AO.55.008938 |
| format | Article |
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| ispartof | Applied Optics, 2016-11, Vol.55 (31), p.8938-8945 |
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| language | eng |
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| source | OSA Publishing; Alma/SFX Local Collection |
| subjects | Chambers Humidity Measuring instruments Monitoring Optical fibers Relative humidity Reproducibility Sensors |
| title | Fiber loop ringdown humidity sensor |
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