All-fiber millimeter-scale M-Z interferometer based on slow light in microknot resonator

Wang, Fan; Zhang, Yundong; Qu, Yingdong; Lin, Shih-Yang; Han, Xiaopeng; Qi, Kaiyue

doi:10.1016/j.optlastec.2023.109351

Cited by 4 publications

(4 citation statements)

References 26 publications

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“…The experimental results show that the phase sensitivity of the sensor is 25.54 rad THz −1 , which is 10.4 times higher than that of the slow-light-free Mach-Zehnder interferometer. [121] Chen et al on the other hand, introduced an artificial neural network technique to compensate the nonlinear error due to temperature-induced geometrical deformation of the MKR when it is used for current sensing, which provides an effective and flexible method to improve the performance of the sensor in real time. [122] So far, some microfiber-based resonators have also proved to be useful for biomass detection, for example, a label-free methylation-specific sensor based on a silicon micro-ring resonator can be used for the detection and quantification of DNA methylation biomarkers in bladder cancer, [123] functionalized whispering gallery mode resonators exhibit specific labelfree biosensing of streptavidin, [124] encapsulated thin-walled microbubble resonators can perform label-free detection of cardiac troponin-I for label-free specific detection [125] and so on.…”

Section: Other Sensingmentioning

confidence: 99%

“…The experimental results show that the phase sensitivity of the sensor is 25.54 rad THz −1 , which is 10.4 times higher than that of the slow‐light‐free Mach‐Zehnder interferometer. [ 121 ] Chen et al. on the other hand, introduced an artificial neural network technique to compensate the nonlinear error due to temperature‐induced geometrical deformation of the MKR when it is used for current sensing, which provides an effective and flexible method to improve the performance of the sensor in real time.…”

Section: Mkr Sensing Applicationsmentioning

confidence: 99%

See 1 more Smart Citation

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%

Section: Mkr Sensing Applicationsmentioning

confidence: 99%

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

Zhang,

Gao,

Xia

et al. 2023

Laser & Photonics Reviews

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“…The THz frequency is 1-4 orders of magnitude higher than the microwaves used in 5 G. It is possible to greatly improve the information transmission rate and network capacity. In the past decade, more and more THz devices with different functions have been reported, such as filters [8][9][10][11][12], sources [13], sensors [14], slow light devices [15], switches [16], absorbers [17] and modulators [18].…”

Section: Introductionmentioning

confidence: 99%

Terahertz narrow-band filter based on 3D-printed periodic waveguides

Wang,

Liu,

et al. 2024

J. Phys. D: Appl. Phys.

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Terahertz (THz) devices, especially waveguide-type functional devices related to transmission and control, are severely scarce due to the lack of effective design and fabrication methods. Here, we experimentally demonstrate a waveguide type of THz narrow-band filter based on 3D-printed technology, which is realized by a cylindrical hollow metal structure with corrugated tube walls. The semi-cylindrical periodic corrugations are 3D printed on a photosensitive resin substrate material, followed by sputtering a layer of gold film on its surface to endow the structure with THz filtering functions. A hollow cylindrical corrugated waveguide is obtained by assembling two identical semi-circular corrugations together. The periodic structure with Bragg resonances can produce a frequency stop band, in which the propagation of THz waves is significantly suppressed. We print a wider section of corrugations in the middle of the waveguide, which destroys the perfect periodicity of the structure and forms a defect. Due to the local resonance caused by the defect, we observe an additional narrow-band transmission peak within the former stop band, which is a good candidate for THz filtering. The filtering bandwidth and extinction ratio are 1.8 GHz and 28 dB, respectively, and the Q-factor reaches 234. The proposed 3D-printed THz filter has the advantages of the simple structure, excellent performance, and easy integration, which can improve the existing THz systems in various applications.

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“…LDV is able to realize high precision and contactless measurement, which has been widely used in the fields of vibration testing of structures and defect detection [1][2][3] . The current commercial LDV frequency can be covered from Hz level to MHz, some areas of special instruments can reach GHz level measurement, and its displacement measurement can reach the highest nm level [4] .…”

Section: Introductionmentioning

confidence: 99%

Non-contact laser-based test method for vibration performance parameters of hemispherical resonator

Wang,

Yi,

Wei

et al. 2024

Advanced Fiber Laser Conference (AFL2023)

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The high-precision measurement of hemispherical resonator vibration performance parameters has been an obstacle limiting the development of high-precision development of Hemispherical Resonator Gyro (HRG). In this paper, a laserbased contactless testing method for the hemispherical resonator vibration performance parameter is proposed to solve the problem of low efficiency and accuracy in the current hemispherical resonator vibration performance parameter testing method. A hemispherical resonator laser vibration measurement system is constructed, and a high-precision identification method of hemispherical resonator vibration performance parameters based on envelope analysis is proposed. Simulation and experimental results show that the free-decaying vibration signals of the hemispherical resonator can be accurately obtained by laser contactless measurement, and the vibration parameters, such as inherent frequency, frequency-split, quality-factor, as well as modal azimuthal angle of the hemispherical resonator could be identified in one-time test by fitting the obtained vibration signals with proposed nonlinear optimization identification method.

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All-fiber millimeter-scale M-Z interferometer based on slow light in microknot resonator

Cited by 4 publications

References 26 publications

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

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

Terahertz narrow-band filter based on 3D-printed periodic waveguides

Non-contact laser-based test method for vibration performance parameters of hemispherical resonator

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