Simultaneous measurement of temperature and surrounding refractive index by superimposed coated long period fiber grating and fiber Bragg grating sensor based on mode barrier region

Pang, Bo; Gu, Zhengtian; Ling, Qiang; Wu, Wenyu; Zhou, Yuan

doi:10.1016/j.ijleo.2020.165136

Cited by 18 publications

(10 citation statements)

References 16 publications

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“…FBG cascaded with LPFG: In 2020, Bo Pang [ 90 ] et al designed a temperature and RI dual-parameter sensor by exploiting the different characteristics of LPFG and FBG for temperature and SRI response ( Figure 10 b). The sensitivity of the sensor to temperature and SRI reached 10 pm/°C and 2326.7 nm/RIU, respectively.…”

Section: Salinity Ofssmentioning

confidence: 99%

Review of Seawater Fiber Optic Salinity Sensors Based on the Refractive Index Detection Principle

Wang

Shi

et al. 2023

Sensors

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This paper presents a systematic review of the research available on salinity optic fiber sensors (OFSs) for seawater based on the refractive index (RI) measurement principle for the actual measurement demand of seawater salinity in marine environmental monitoring, the definition of seawater salinity and the correspondence between the seawater RI and salinity. To further investigate the progress of in situ measurements of absolute salinity by OFSs, the sensing mechanisms, research progress and measurement performance indices of various existing fiber optic salinity sensors are summarized. According to the Thermodynamic Equation of Seawater-2010 (TEOS-10), absolute salinity is recommended for sensor calibration and measurement. Comprehensive domestic and international research progress shows that fiber-optic RI sensors are ideal for real-time, in situ measurement of the absolute salinity of seawater and have excellent potential for application in long-term in situ measurements in the deep ocean. Finally, based on marine environmental monitoring applications, a development plan and the technical requirements of salinity OFSs are proposed to provide references for researchers engaged in related industries.

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Section: Salinity Ofssmentioning

confidence: 99%

Review of Seawater Fiber Optic Salinity Sensors Based on the Refractive Index Detection Principle

Wang

Shi

et al. 2023

Sensors

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“…Khlaifi dkk [8] juga menambahkan bahwa FBG memerlukan deteksi batas untuk membedakan suhu, regangan dan tekanan menggunakan kisi serat Bragg. Penelitian Pang dkk [9] melakukan penelitian pengukuran suhu dan indeks bias pada kisi serat Bragg untuk menentukan sesitivitas dan linearitas dari FBG tersebut.…”

Section: Pendahuluanunclassified

Pengaruh Sensitivitas Suhu Dengan Metode Couple-Mode Terhadap Fiber Bragg Grating Fiber Optik

Nasrulloh¹,

Syahriar

Prasetyono³

2021

Jurnal Teknik Elektro AVITEC

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The characteristics of Fiber Bragg Grating (FBG) related to change of reflection power and wavelength shift in the fiber optic due to changes in temperature. Furthermore, the refractive index alo affects the sensitivity of FBG. Using the Coupled-mode theory, the derivation of mathematical formula can be found to justify the effect of temperature in FBG. Also, the Coupled-mode theory is integrated numerically by the Transfer Matrix method to achieve the final equation of the effect of temperature in FBG. To obtain optimal results, several different parameter values are given to be analyzed. The results show that the temperatures are affecting the wavelength but have no effect on the peak of reflection power. In addition, by increasing the temperature and value of the refractive index will affect the enhancement of the sensitivity of FBG. These characteristics are a good opportunity to produce filters, sensors, or other applications by utilizing the characteristics of temperature in FBG.

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“…This technique was subsequently applied to the measurements of nuclear medicine liquid isotopes. Pang et al [28] proposed a method to simultaneously measure the temperature and surrounding refractive index with a coated long-period FBG based on a modal barrier zone. The linearity of the measured temperatures was as high as 0.999, and its sensitivity was four times higher than the previous research.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Large-Temperature-Range and Long-Period Monitoring for LNG Marine Auxiliary Based on Fiber Bragg Grating Temperature Measurement

Han

Wang

Zhang

et al. 2021

JMSE

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Temperature is a key variable to evaluate the energy consumption and thermodynamic performance of traditional marine auxiliary machinery, chillers and piping systems. In particular, for the cryogenic storage tanks and fuel gas supply systems of LNG ships, explosion-proof and low-temperature-resistance properties bring new challenges to the onboard temperature measurement and monitoring. In order to promote the development of high-performance and safer monitoring systems for LNG ships, this paper adopted fiber Bragg grating (FBG) technology to ensure the measurement safety and accuracy of temperature sensors, and performs a series of experiments in a large temperature range on the chiller, pipeline, and cryogenic storage tank of an LNG ship and their long-term reliabilities. Firstly, the principle and composition of the designed FBG temperature sensors are introduced in detail, and the measurement accuracy and range of different metal-coated optical fibers were tested in a large temperature range and compared against the traditional thermistors. Then, the effects of different operating conditions of the LNG marine chiller system and cryogenic storage tank on the temperature measurements were investigated. In addition, the drift degrees of the optical fibers and industrial thermistors were analyzed to figure out their reliabilities for long-term temperature measurements. The results showed that for the long-period (16 months) monitoring of LNG ships in a large temperature range (105–315 K) under different shipping conditions, the optical temperature measurement based on FBG technology has sufficient accuracy and dynamic sensitivity with a higher safety than the traditional thermoelectric measurement. Besides, the ship vibration, ambient humidity, and great temperature changes have little impact on its measurement reliability and drifts. This research can provide references and technical supports to the performance testing systems of LNG ships and other relevant vessels with stricter safety standards.

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Simultaneous measurement of temperature and surrounding refractive index by superimposed coated long period fiber grating and fiber Bragg grating sensor based on mode barrier region

Cited by 18 publications

References 16 publications

Review of Seawater Fiber Optic Salinity Sensors Based on the Refractive Index Detection Principle

Review of Seawater Fiber Optic Salinity Sensors Based on the Refractive Index Detection Principle

Pengaruh Sensitivitas Suhu Dengan Metode Couple-Mode Terhadap Fiber Bragg Grating Fiber Optik

Experimental Study of Large-Temperature-Range and Long-Period Monitoring for LNG Marine Auxiliary Based on Fiber Bragg Grating Temperature Measurement

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