Effect of Size on Single and Double Optical Microbottle Resonator Humidity Sensors

Johari, Ashadi Md; Khudus, Muhammad Imran Mustafa Abdul; Jali, Mohd Hafiz; Noman, Abdullah Al; Harun, Sulaiman Wadi

doi:10.1016/j.sna.2018.10.035

Cited by 24 publications

(13 citation statements)

References 27 publications

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“…The MBR-PMMAs manage to have >10 5 , which was similar to previous works. 9,28 Figure 3 shows that the biggest MBR-PMMA (Figure 3C, resonator C), managed to have the highest Qfactor of 5.284 × 10 5 , followed by the second largest MBR-PMMA (Figure 3B, resonator B) with 3.583 × 10 5 and the smallest coating MBR-PMMA (Figure 3A, resonator A) with 2.384 × 10 5 . Here, the size of the MBR-PMMA may influence the value of the Q-factor and insertion loss of the resonator.…”

Section: Characterization Of Mbr-pmmamentioning

confidence: 99%

“…[6][7][8] The OMR works by exploiting the whispering gallery modes (WGsM), which was then utilized in laser technology sensing applications in plasmonic devices. [9][10][11] The number structure of OMR is proposed, such as microring, microloop and microsphere. [12][13][14] By concepts, WGMs spatially moved crossed the resonator axis, allowing high optical forces that helped to expand photon lifetime and increase the quality of the mode.…”

Section: Introductionmentioning

confidence: 99%

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Comparative study an effect of polymethyl methacrylate coating on optical microbottle resonator for enhancing sensing performance for ethanol liquid sensor

Johari

Apsari

Yasin

2022

Micro & Optical Tech Letters

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This paper observed the performance of the coated optical microbottle resonator (MBR) for the liquid ethanol concentration sensor. The MBR is prepared in three sizes by a technique known as "soften-and-compress" from silica fiber SMF-28 with parameters named stem diameter, bottle length, and bottle diameter. The MBR is then coated with PMMA by the "drop-casting" technique used as an ethanol sensor. The MBR-PMMAs were characterized by microfiber diameter and managed to have a Q-factor. The ethanol liquid concentration used is from 10% to 100% ppm. The sensitivity, linearity, repeatability, stability, and wavelength shift results were then used to determine the performance of MBR-PMMAs as an ethanol sensor. The most significant size of MBR-PMMA, known as "C," is defined as an excellent ethanol liquid concentration sensor. Additionally, the resonator's size is determined and may influence its ability to perform well as a sensor.

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Section: Characterization Of Mbr-pmmamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative study an effect of polymethyl methacrylate coating on optical microbottle resonator for enhancing sensing performance for ethanol liquid sensor

Johari

Apsari

Yasin

2022

Micro & Optical Tech Letters

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“…14 The micro-bottle is characterized by three dimensions; its bottle length L b , bottle diameter D b and stem diameter D s as shown in Figure 1(A). 24 The light is coupled through the MBR using a tapered fiber of 3 μm sizes. The fiber was tapered using the flame brushing technique.…”

Section: Experimental Arrangementmentioning

confidence: 99%

Effect of agarose concentration on coated micro‐bottle resonators for humidity detection

Zain

Batumalay

Rahim

et al. 2021

Micro & Optical Tech Letters

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Agarose is a stable hydrophilic material commonly used for relative humidity sensing application. Agarose porous nature causes changes in its refractive index as relative humidity change. Micro bottle resonators are a promising choice for sensing applications due to their good quality factor. In this work, the effect of agarose gel concentration on micro-bottle ability to detect relative humidity changes was investigated. The agarose gel coating was made in two different concentrations 0.5% and 1%. These two concentrations were used as coating for microbottle resonators with the diameter of 190 μm. The micro-bottle samples were made by the soften-and-compress technique. In the humidity range of 35%-85% RH, the 0.5% agarose gel coated microbottle had a sensitivity of 0.1077 dB/RH%. The microbottle resonator coated with the 1% solution showed a lower sensitivity of 0.0899 dB/ RH%. This improvement in sensitivity with lower agarose gel concentration is due to the pore size of agarose gel. Yet, both concentrations showed improvement in sensitivity compared to the bare micro-bottle showing that agarose can be a potential choice for building sensitive efficient relative humidity sensors.

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Section: Applicationsmentioning

confidence: 99%

“…Efforts have been paid to improve the sensitivity through optimizing the size and the material of the microcavity. [205] Many researchers have reported microspheres as the resonators to successfully realize the sensing of relative humidity (RH). [206,207] Eryürek et al [208] utilized SU-8 polymer microdisk, which is a material that has high interaction with water vapor and also easy-to-fabricate, to make an integrated humidity sensor (Figure 12a).…”

Section: Humidity Sensingmentioning

confidence: 99%

Microfluidic Whispering Gallery Mode Optical Sensors for Biological Applications

Wang

Zeng

Humbert

et al. 2020

Laser & Photonics Reviews

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Whispering gallery mode (WGM) resonators have been exploited as a highly sensitive and efficient sensing technique in the past few years. They offer the advantages of ultrahigh sensitivity, compact size, and label-free sensing capability. More recently, with the rapid development of microfluidic technologies, many integrated WGM sensors, by combining the portability of lab-on-chip devices and the high sensitivity of WGM resonators, have emerged. The capabilities of efficient sample handling and multiplexed analyte detection offered by these systems have led to many biological and chemical sensing applications, especially for the detection of single particle or biomolecule. In this review, different sensing mechanisms based on integrated whispering gallery mode resonators are introduced. Various geometries of WGM cavities including solid, liquid, and hollow resonators and a detailed discussion on their integration with microfluidic devices are also covered. Different types of packaging schemes and integration methods are compared in terms of ease of fabrication and device performance. Finally, recent applications of microfluidic-based WGM sensors for detecting biological and chemical target molecules are discussed, with a prospect on future challenges and trends of development in microfluidics for multiplexed detection.

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Effect of Size on Single and Double Optical Microbottle Resonator Humidity Sensors

Cited by 24 publications

References 27 publications

Comparative study an effect of polymethyl methacrylate coating on optical microbottle resonator for enhancing sensing performance for ethanol liquid sensor

Comparative study an effect of polymethyl methacrylate coating on optical microbottle resonator for enhancing sensing performance for ethanol liquid sensor

Effect of agarose concentration on coated micro‐bottle resonators for humidity detection

Microfluidic Whispering Gallery Mode Optical Sensors for Biological Applications

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