A scatterer-assisted whispering-gallery-mode microprobe

Shu, Fangjie; Jiang, Xuefeng; Zhao, Guangming; Yang, Lan

doi:10.1515/nanoph-2018-0063

Cited by 32 publications

(8 citation statements)

References 46 publications

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“…Temperature sensing with good stability and robustness is also demonstrated. Besides the advantage of the reflection mode [38], the merits of this fiberbased device also include good integration and being alignment-free and etching-free, making it simple in processing and robust in structure, which shows broad potential for WGM-related applications such as sensors, optical filters, and lasers.…”

Section: Resultsmentioning

confidence: 99%

Embedded whispering-gallery mode microsphere resonator in a tapered hollow annular core fiber

Wang¹,

Zhang²,

Yan³

et al. 2018

Photon. Res.

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We propose and demonstrate a tapered hollow annular core fiber (HACF) coupler for excitation of whisperinggallery modes (WGMs) of an embedded microsphere resonator. The coupler is simply fabricated by fusion splicing of a segment of HACF with the single-mode fiber (SMF), and then improved by tapering the splicing joint to reduce the cone-apex angle. Therefore, the coupling efficiency from the SMF to the HACF is enhanced to excite various WGMs via evanescent field coupling. Normal positive, negative symmetrical Lorentzian and asymmetric Fano line shapes can be obtained by varying the resonator size and location. Another interesting phenomenon is observed that a higher Q-factor mode in a lower Q-factor mode has a contrast as high as 58. Temperature sensing with good stability is also demonstrated. This embedded WGM microsphere resonator in the tapered HACF is expected to promote environmental adaptability in practical applications due to its simplicity and robustness.

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Section: Resultsmentioning

confidence: 99%

Embedded whispering-gallery mode microsphere resonator in a tapered hollow annular core fiber

Wang¹,

Zhang²,

Yan³

et al. 2018

Photon. Res.

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“…There is still significant progress to be made in the development of WGM microresonator structures, such as deformed microresonators, 136 , 137 , 138 , 139 , 140 , 141 , 142 , 143 , 144 endoscopic sensing probes, 145 , 146 and WGM sensors in chip-based microfluidics channels. 147 Not only will these lead to further improvement in device sensitivity but they will also allow for the detection of analytes that are beyond the reach of current techniques.…”

Section: Discussionmentioning

confidence: 99%

Whispering-Gallery Sensors

Jiang

Qavi

Huang

et al. 2020

Matter

Self Cite

235

105

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Summary Optical whispering-gallery mode (WGM) microresonators, confining resonant photons in a microscale volume for long periods of time, strongly enhance light-matter interactions, making them an ideal platform for photonic sensors. One of the features of WGM sensors is their capability to respond to environmental perturbations that influence the optical mode distribution. The exceptional sensitivity of WGM devices, coupled with the diversity in their structures and the ease of integration with existing infrastructures, such as conventional chip-based technologies, has catalyzed the development of WGM sensors for a broad range of analytes. WGM sensors have been developed for multiplexed detection of clinically relevant biomolecules while also being adapted for the analysis of single-protein interactions. They have been used for the detection of materials in different phases and forms, including gases, liquids, and chemicals. Furthermore, WGM sensors have been used for a wide variety of field-based sensing applications, including electric field, magnetic field, force, pressure, and temperature. WGM sensors hold great potential for applications in life and environmental sciences. They are expected to meet the ever-increasing demand in sensor networks, the Internet of Things, and real-time health monitoring. Here we review the mechanisms, structures, parameters, and recent advances of WGM microsensors and discuss the future of this exciting research field.

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“…Strategies such as designing of deformed disk cavity, cavities with vertebral angles or slits are proposed to control the emission direction. 25–28 As for the realization of single mode lasing, methods such as fabrication of grating or square resonator microlasers or introducing metal reflector are applied. 29–31 These designs improve the practicality of the microdisk lasers within optoelectronic devices by facilitating unidirectional emission or chaos-assisted broadband coupling.…”

Section: Introductionmentioning

confidence: 99%