Effect of localized doping in microknot fiber resonators for resonance-shift based sensing

Blank, A. Ya.; Linzon, Yoav

doi:10.1016/j.optcom.2021.126931

Cited by 2 publications

(2 citation statements)

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“…The MKRs with a radius of 50-100 μm can significantly improve the sensing capability and mechanical strength (mechanical bending stress and critical load). [119] MKR resonators can also be used for electric field sensing, the sensing principle of which also relies on the change in refractive index around the structure resulting in a shift in wavelength. In 2017, Hou et al reported a novel electric field sensor with a microfiber knot resonator cavity clad in propylene carbonate.…”

Section: Other Sensingmentioning

confidence: 99%

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Microfiber Knot Resonators: Structure, Spectral Properties, and Sensing Applications

Zhang,

Gao,

Xia

et al. 2023

Laser & Photonics Reviews

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In recent years, compact micro‐/nanofiber sensors with fast response and high resolution have become a hot field in sensing and nanotechnology. In addition to the unique properties of microfibers such as strong evanescent field, low optical loss, and easy integration, microfiber knot resonators further improve the sensing capability due to their resonance properties. The potential high‐quality factor allows higher sensing sensitivity and resolution, which is very attractive for optical sensing at the micro‐/nano scale. More application potential can be effectively stimulated by improving the structure shape or principle or combining with functional sensitive materials. This paper first introduces the preparation process and spectral characteristics of conventional microfiber knots and then focuses on three new types of devices for enhancing the sensing performance, namely material‐coated, shape‐improved, and principle‐extended, and briefly analyzes their spectral properties. In addition, the research progress and applications of these sensors are summarized. Finally, the existing problems in this field are analyzed, and the directions for further development are discussed and prospected.

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Section: Other Sensingmentioning

confidence: 99%

“…analyzed the mechanical bending strength of undoped and doped micro‐tapers, and demonstrated that local doping of germanium in MKR coupling zones in small MKRs with a radius of 50–100 µm can significantly improve the sensing capability and mechanical strength (mechanical bending stress and critical load). [ 119 ]…”

Section: Mkr Sensing Applicationsmentioning

confidence: 99%