Temperature sensor and fiber laser based on optical microfiber knot resonator

Ahmad, Harith; Zulkhairi, A.S.; Azzuhri, Saaidal Razalli

doi:10.1016/j.ijleo.2017.10.032

Cited by 11 publications

(5 citation statements)

References 32 publications

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“…[11]), but its temperature sensitivity is limited to several dozens of μm/ o C (Refs. [11][12][13][14][15][16][17]). The PDMS film packaged MKR has been demonstrated with a 50-200 folds higher sensitivity due to the excellent physical and chemical stability of PDMS, as well as its thermal expansion and thermal optical effect.…”

Section: Resultsmentioning

confidence: 99%

“…Being packaged in polydimethylsiloxane (PDMS), the temperature sensitivity of the silica MKR was only -41.58 pm/ o C [15]. Being limited by the thermo-optic and elastic-optic effect of silica, it is difficult to further improve the temperature sensitivity of a pure MKR, without introducing sensitizing materials [16]. To slow-down aging, avoid environmental pollution, and effectively improve their sensitivity, MKRs are usually coated with thin film or embedded within low refractive materials such as polytetrafluoroethylene (PTFE) and PDMS.…”

Section: Introductionmentioning

confidence: 99%

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A Highly-Sensitive Temperature-Sensor Based on a Microfiber Knot-Resonator Packaged in Polydimethylsiloxane

Dang

Chen

2021

IEEE Photonics J.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Highly-Sensitive Temperature-Sensor Based on a Microfiber Knot-Resonator Packaged in Polydimethylsiloxane

Dang

Chen

2021

IEEE Photonics J.

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“…Additionally, Xianchao Yang et al filled a PCF with toluene to achieve a sensitivity close to 1.747 nm/ • C; the filled PCF was set into a ring fiber laser cavity configuration [100]. Another alternative for fiber laser sensor was presented by H. Ahmad et al [101]; here, a ring fiber laser cavity and a photonic filter were integrated for temperature sensing. Filling the SH with isopropanol has also been demonstrated as a reliable alternative to improve the temperature fiber laser sensor performance [102].…”

Section: Temperature Fiber Laser Sensorsmentioning

confidence: 99%

Fiber Laser Sensor Configurations for Refractive Index, Temperature and Strain: A Review

et al. 2023

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Fiber laser sensors have been present for almost four decades as versatile sensing devices with a simple demodulation process, high sensitivity, and competitive resolution. This work discusses the most representative fiber laser sensor configurations employed for detecting critical parameters such as temperature, refractive index, and strain. However, essential information about other interesting parameters that have been measured is considered in this manuscript. Concurrently, the sensing elements and principle operation are described. Furthermore, these configurations are analyzed in terms of their principle of operation, sensitivity, gain medium, and wavelength operation range. According to the literature reviewed, fiber laser sensors offer the possibility of new interrogation techniques and simultaneous, independent detection. Considering interferometric fiber sensors, the fiber laser sensors offer high brightness, good output power, and high resolution. As a result, it is demonstrated that fiber laser sensors are a robust alternative for multiple sensing applications.

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“…Since the discovery of laser technology, in 1960 by T. H. Maiman, the optical fiber sensors were introduced and developed for detecting critical parameters in the processing industries, such as, temperature, refractive index, concentration and strain [1][2][3][4][5][6]. Moreover, in the last decades, fiber laser sensors with different configurations have been revealed a versatile sensing tool for applications in different fields [7].…”

Section: Introductionmentioning

confidence: 99%

Linear Fiber Laser Configurations for Optical Concentration Sensing in Liquid Solutions

Soares,

Pérez-Herrera,

Novais

et al. 2024

Preprint

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In this study, different configurations based on linear fiber lasers were proposed and experimentally demonstrated to measure the concentration of paracetamol liquid solutions in a range of 52.61 to 201.33 g/kg. The optical gain was provided by a commercial bidirectional Erbium-Doped Fiber Amplifier (EDFA) and the linear cavity was obtained using two commercial Fiber Bragg Gratings (FBGs). The main difference of each configuration was the coupling ratio of the optical coupler used to extract the system signal. The sensing head corresponded to a Single-Mode Fiber (SMF) tip that worked as an intensity sensor. The results reveal that, despite the optical coupler used (50:50, 60:40, 70:30 or 80:20), all the configurations reached the laser condition, however, the concentration sensing was only possible using a laser drive current near to the threshold value. The configurations using a 70:30 and an 80:20 optical coupler allowed to perform paracetamol concentration measurements with a higher sensitivity of (-3.00±0.24) pW/(g/kg). In terms of resolution, the highest value obtained was 1.75 g/kg, when it was extracted 20% of the output power to the linear cavity fiber laser configuration.

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Temperature sensor and fiber laser based on optical microfiber knot resonator

Cited by 11 publications

References 32 publications

A Highly-Sensitive Temperature-Sensor Based on a Microfiber Knot-Resonator Packaged in Polydimethylsiloxane

A Highly-Sensitive Temperature-Sensor Based on a Microfiber Knot-Resonator Packaged in Polydimethylsiloxane

Fiber Laser Sensor Configurations for Refractive Index, Temperature and Strain: A Review

Linear Fiber Laser Configurations for Optical Concentration Sensing in Liquid Solutions

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