Coupled Optical Resonances in a Dielectric Microsphere: Physical Concept of a Miniature Optical Pressure Sensor

Geints, Yu. É.; Minin, Igor V.; Minin, Oleg V.

doi:10.1134/s1024856022060112

Cited by 4 publications

(5 citation statements)

References 26 publications

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“…Practically, the anti-bonded supermode can be considered as the eigenmode resonance of the half-PM located near a perfectly reflecting mirror. Previously [43], in the example of a dielectric sphere on a mirror, it was shown that in this case, the blue shift in TE-mode resonance is realized. A similar effect is observed for the anti-bonded supermode of a photonic molecule.…”

Section: Pm-bs Structural Model and Working Principlementioning

confidence: 94%

Design of Photonic Molecule-Based Multiway Beam Splitter/Coupler with Variable Division Ratio

Geints

2024

Photonics

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An optical beam splitter is used for dividing an input optical beam into several separate beams with a specific power ratio. Usually, conventional optical beam splitters have bulky dimensions (many optical wavelengths) and a fixed dividing ratio, which significantly limit the design of new miniaturized optical devices and integrated optical circuits. We propose and investigate in detail a novel physical concept of a highly miniaturized (up to two working wavelengths) planar optical resonant splitter/coupler with a switching element comprising a photonic molecule (PM) pair dispersing input optical fluxes in multiple directions with a tailored power ratio. The structural design of the proposed splitter is based on a silicon-on-insulator (SOI) platform and composed of high-quality resonators in the form of electromagnetically coupled submicron-sized microcylinders. The control on the power division ratio and the selection of optical beam directions is realized by tuning the photonic splitter structure to the corresponding resonance of the PM supermode. Compared to known analogs, the proposed design is easy and cheap in fabrication. Because of its tiny dimensions, it is suitable for integration into a “System-on-a-chip” platform and can dynamically change the beam power division ratio by input wave-phase manipulation.

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Section: Pm-bs Structural Model and Working Principlementioning

confidence: 94%

Design of Photonic Molecule-Based Multiway Beam Splitter/Coupler with Variable Division Ratio

Geints

2024

Photonics

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show abstract

“…Practically, the anti-bonded supermode can be considered as the eigenmode resonance of the half-PM located near a perfectly reflecting mirror. Previously [38] on the example of a dielectric sphere on a mirror it was shown, that in this case the blue shift of TE-mode resonance is realized. Similar effect is observed for the antibonded supermode of a photonic molecule.…”

Section: Pm-bs Structural Model and Working Principlementioning

confidence: 97%

“…It can be seen that in resonance, the streamlines of vector S are captured from the feed waveguide by nearby atoms of the molecule and then directed into the hybridized field of PM supermode formed by the coupling of atomic resonant modes. Photonic molecules on both sides of the feed waveguide always have a counter-directed circulation of optical energy and produce the regions of field singularity such as optical vortices and saddles, which is typical for standing-wave resonators [38]. The most distant atoms of photonic molecules (relative to input waveguide) drop a part of the energy flux into the lateral waveguides and the rest of mode optical energy is looped again in the molecular supermode.…”

Section: Pm-bs Structural Model and Working Principlementioning

confidence: 99%

Design of Photonic-Molecule-Based Multiway Beam Splitter/Coupler with Variable Division Ratio

Geints

2023

Preprint

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Optical beam splitter is used for dividing an input optical beam into several separate beams with specific power ratio. Usually, conventional beam splitters have bulky dimensions and fixed dividing ratio which significantly limit the design of new miniaturized optical devices and integrated optical circuits. We propose and investigate a novel physical concept of a miniaturized planar optical splitter/coupler with a switching element in the form of a photonic molecule (PM) pair dispersing input optical fluxes along multiple ways with variable power proportions. The structural design of the proposed splitter is based on a silicon-on-insulator (SOI) platform and composed of high-quality resonators in the form of electromagnetically coupled submicron-sized microcylinders. The control on the power division ratio and the selection of optical beam directions is realized by tuning the photonic splitter structure to the corresponding resonance of PM supermode. Compared to known analogues, the proposed design is easy to fabricate, suitable for integration into a "System-on-a-chip" platform and can dynamically change the beam power division ratio by input wave-phase manipulation.

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“…57,58 When short laser pulses propagate through a microsphere, the time evolution of the photonic nanojet could be complex due to the presence of whispering gallery mode (WGM) resonances that have recently enhanced sensor performances. 59 Whispering gallery modes are resonances developed as stationary internal waves traveling near the microsphere surface. When light propagates along these circumferential paths, it accumulates delay in forming the scattered light and possibly the photonic nanojet in the focal region.…”

Section: ■ Microsphere-aided Microscopymentioning

confidence: 99%

“…Few recent works highlight the behavior of a short laser pulse propagating through a microsphere, almost exclusively to report applications in ablation. , When short laser pulses propagate through a microsphere, the time evolution of the photonic nanojet could be complex due to the presence of whispering gallery mode (WGM) resonances that have recently enhanced sensor performances . Whispering gallery modes are resonances developed as stationary internal waves traveling near the microsphere surface.…”

Section: Microsphere-aided Microscopymentioning

confidence: 99%

Optical Time-Resolved Microscopy on Few-Atoms-Thick Materials

Mermoul,

Ruzankina,

Giannetti

et al. 2024

J. Phys. Chem. C

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In the past decade, the emergence of ultrathin 2D films consisting of only a few atomic layers deposited on various substrates sparked new ideas and research. This Perspective provides a nonexhaustive review of utilizing ultrafast optical pump−probe microscopy and the models for fitting experimental data that emerged in the past few years. We will focus on retrieving optically induced modifications of material parameters from pump−probe data on 2D materials, involving the inversion of Maxwell's equations and discussing new methods to localize optical interactions to capture the response of 2D films with increased resolution and sensitivity. These areas represent promising avenues for advancing our understanding of the dynamic behavior of ultrathin 2D films and their response to ultrafast optically induced transients.

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Coupled Optical Resonances in a Dielectric Microsphere: Physical Concept of a Miniature Optical Pressure Sensor

Cited by 4 publications

References 26 publications

Design of Photonic Molecule-Based Multiway Beam Splitter/Coupler with Variable Division Ratio

Design of Photonic Molecule-Based Multiway Beam Splitter/Coupler with Variable Division Ratio

Design of Photonic-Molecule-Based Multiway Beam Splitter/Coupler with Variable Division Ratio

Optical Time-Resolved Microscopy on Few-Atoms-Thick Materials

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