A fiber laser sensor for liquid level and temperature based on two taper structures and fiber Bragg grating

Zhang, Weihua; Ying, Zesheng; Yuan, Shuo; Tong, Zhengrong

doi:10.1016/j.optcom.2014.12.065

Cited by 44 publications

(11 citation statements)

References 15 publications

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“…Thus, the results showed a linear behavior in the mentioned range, and are represented in Figure 4b). The sensitivity value and the Δλ max was 398.57 pm/ºC and 7.8 nm, respectively and represent much better values than other recent works with gratings [32][33][34][35][36].…”

Section: Coated Lpg Optical Responsementioning

confidence: 67%

Simultaneous measurement of humidity and temperature based on a partially coated optical fiber long period grating

Urrutia

Goicoechea

Ricchiuti

et al. 2016

Sensors and Actuators B: Chemical

121

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A humidity and temperature optical fiber sensor based on a long-period grating (LPG), which can provide simultaneous response to both magnitudes, is proposed and demonstrated via experiments. Previously, the LPG was fully coated with humidity sensitive nanostructured polymeric thin films by the Layer-by-Layer (LbL) nano assembly technique. Hence the surrounding refractive index was changed, so provoking wavelength shifts of the attenuation bands of the transmission spectrum. This fully coated LPG was exposed to relative humidity (RH) and temperature tests, varying from 20% to 80% RH and from 25 ºC to 85 ºC, respectively. Then, half of the LPG coating was chemically removed and this results in the splitting of the main attenuation band into two different contributions. When this semi-coated LPG was also exposed to RH and temperature tests, the new two attenuation bands Revised Manuscript lick here to view linked References presented different behaviours for humidity and temperature. This novel dual-wavelength based sensing method enables the simultaneous measurement of RH and temperature using only one LPG.

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Section: Coated Lpg Optical Responsementioning

confidence: 67%

Simultaneous measurement of humidity and temperature based on a partially coated optical fiber long period grating

Urrutia

Goicoechea

Ricchiuti

et al. 2016

Sensors and Actuators B: Chemical

121

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“…p . The wavelength shift caused by the variations of the surrounding temperature and RI can be described as [17,19] Δλ…”

Section: Operating Principle and Theoretical Analysismentioning

confidence: 99%

Temperature-compensated magnetic field sensing with a dual-ring structure consisting of microfiber coupler-Sagnac loop and fiber Bragg grating-assisted resonant cavity

et al. 2019

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A novel temperature-compensated magnetic field sensor based on a ring erbium-doped fiber laser combined with a fiber Bragg grating (FBG) and a Sagnac loop containing a microfiber coupler (MFC) and magnetic fluid is proposed and investigated. Thanks to the dual-ring structure of the MFC-Sagnac loop and the FBG-assisted resonant cavity, the output of the structure has two distinct laser peaks. In addition to the magnetic field sensing capability, the proposed structure can simultaneously provide temperature information. The maximum experimentally demonstrated sensitivity to a magnetic field determined from the spectral shift of one laser peak is 102 pm/mT in the magnetic field range from 0 to 60 mT. The spectral position of the other laser peak is independent of the magnetic field but shifts toward longer wavelengths with temperature with a sensitivity of 18 pm/°C. The proposed magnetic field sensor is advantageous for applications requiring measurement accuracy over a wide magnetic field range with a compensating of temperature information.

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“…Zhang et al [ 43 ] in the year of 2014, pointed out that the precise measurement of liquid level should detach the influence brought by the temperature. Meanwhile, they also recognized that the fiber laser-based sensors can gain high sensitive measurement of liquid level.…”

Section: Sensing Applicationsmentioning

confidence: 99%

Optical Fiber Sensors Based on Fiber Ring Laser Demodulation Technology

Xie

Zhang

Wang

et al. 2018

Sensors

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A review for optical fiber sensors based on fiber ring laser (FRL) demodulation technology is presented. The review focuses on the principles, main structures, and the sensing performances of different kinds of optical fiber sensors based on FRLs. First of all, the theory background of the sensors has been discussed. Secondly, four different types of sensors are described and compared, which includes Mach–Zehnder interferometer (MZI) typed sensors, Fabry–Perot interferometer (FPI) typed sensors, Sagnac typed sensors, and fiber Bragg grating (FBG) typed sensors. Typical studies and main properties of each type of sensors are presented. Thirdly, a comparison of different types of sensors are made. Finally, the existing problems and future research directions are pointed out and analyzed.

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A fiber laser sensor for liquid level and temperature based on two taper structures and fiber Bragg grating

Cited by 44 publications

References 15 publications

Simultaneous measurement of humidity and temperature based on a partially coated optical fiber long period grating

Simultaneous measurement of humidity and temperature based on a partially coated optical fiber long period grating

Temperature-compensated magnetic field sensing with a dual-ring structure consisting of microfiber coupler-Sagnac loop and fiber Bragg grating-assisted resonant cavity

Optical Fiber Sensors Based on Fiber Ring Laser Demodulation Technology

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