Phase-shifted fiber-Bragg-grating-based humidity sensor

Wang, Hao; Guo, Honglei; Xiao, Gaozhi; Mrad, Nezih; Kazemi, Alex A.; Ban, Dayan

doi:10.1117/12.2016600

Cited by 10 publications

(3 citation statements)

References 37 publications

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“…Numerous materials are known for changing color or density on exposure to water vapor, the challenge being a response over a wide range of RHs, achieving a large signal change and full reversibility, and making sensors insensitive to air pollutants and temperature. An FBG sensor was built using a polyimide coating for measuring RH. − The polyimide coating exhibits peculiar swelling properties, which induces the tensioning of the coated grating and subsequent signaling of the change in RH through a shift of the Bragg peak wavelength. A resolution of 2% RH (which is moderate) was achieved, and the response range is between 25% and 65% of RH.…”

Section: Sensors For Humidity Water Fractions Hydrogen Peroxide and H...mentioning

confidence: 99%

Fiber-Optic Chemical Sensors and Biosensors (2013–2015)

2015

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Section: Sensors For Humidity Water Fractions Hydrogen Peroxide and H...mentioning

confidence: 99%

Fiber-Optic Chemical Sensors and Biosensors (2013–2015)

2015

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“…ТБТ бірнеше ерекше түрлері бар: чирпирленген [4], көлбеу [5], бірнеше ТБТ суперпозициялары [6,7] және фазалық ығысу торлары [8,9]. Дифракциялық құрылымдардың соңғы түрлері-бұл екі аймаққа шартты түрде бөлінген ТБТ, олардың жалпы сәулеленуі Брэгг резонансының толқын ұзындығында фазаға қарсы болады.…”

Section: материалдар мен тәсілдерunclassified

Исследование Основных Параметров Волоконных Датчиков На Основе Наклонных Волоконных Решеток Брэгга И Влияние На Них Внешних Факторов

Кашаганова

2022

Вестник КазАТК

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В данной статье описывается применение волоконных датчиков на основе наклонных волоконных решеток Брэгга (НВРБ) для мониторинга дорожного покрытия. Волоконные датчик (ВД) на основе наклонных волоконных решеток Брэгга могут обеспечить возможность одновременного измерения деформации и температуры для мониторинга конструкций дорожного покрытия. НВРБ представляет собой универсальное устройство для выборочного возбуждения определенных мод оболочки, посредством чего имеется возможность регистрировать изменение состояния окружающей среды, контролируя спектральный отклик решетки, что может быть реализовано в оптических датчиках. НВРБ сохраняют все преимущества датчиков на основе традиционных решеток, таких как способность дистанционного зондирования, и используются для создания многопараметрических датчиков чрезвычайно малого веса и размера, что позволяет встраивать или прикреплять датчики к исследуемым конструкциям. Измерения температуры и деформации НВРБ основаны на сдвиге длины волны основного режима. Температурная чувствительность составляет приблизительно 10 мкм/оС. Рассмотрены спектральные характеристики НВРБ и влияние на их внешних факторов.

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“…Sensitivity, accuracy and dynamic range has been greatly enhanced with FBG structure [82]. Various FBG-based structures including apodized FBG [83], phase-shifted FBG [84], long period grating (LPG) [85] and tilted grating [86] also find their position in sensing. Each grating structure has its own attributes in tuning the spectral characteristics such as narrow FWHM, greater reflectivity, narrow line width, suppression of side lobes and selectivity towards measurands.…”

Section: Fiber Optic Sensor For Corrosion Factor Analysismentioning

confidence: 99%

Review of Fiber Optical Sensors and Its Importance in Sewer Corrosion Factor Analysis

et al. 2021

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Adverse effects of wastewater on the hygiene of human and circumstances is a major issue in society. Appropriate refining systems with high efficiency is required to treat the wastewater. Sewage treatment plant plays a major and important role in conserving incredible nature of the environment. Microbiologically Induced Corrosion (MIC) is an important phenomenon in sewage structures which causes the deterioration of infrastructures. Huge capital has been spent and efforts have been made on wastewater treatment infrastructure to increase operating efficiency and reliability of compliance. The investments in reimbursement and maintenance of sewer structures upsurge with an increase in the rate of MIC. The focus of this review is to describe MIC in sewer structure and the factors influencing the corrosion such as the generation of Sulfuric acid (H2SO4), Relative Humidity (RH), pH of the concrete structure and temperature. Modern developments in the design of Fiber Optical Sensors (FOSs) for observing the parameters including pH, Hydrogen Sulfide (H2S), RH and temperature will be discussed.

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Phase-shifted fiber-Bragg-grating-based humidity sensor

Cited by 10 publications

References 37 publications

Fiber-Optic Chemical Sensors and Biosensors (2013–2015)

Fiber-Optic Chemical Sensors and Biosensors (2013–2015)

Исследование Основных Параметров Волоконных Датчиков На Основе Наклонных Волоконных Решеток Брэгга И Влияние На Них Внешних Факторов

Review of Fiber Optical Sensors and Its Importance in Sewer Corrosion Factor Analysis

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