Theoretical analysis of VO2 filled double rectangular cavity-based coupled resonators for plasmonic active switch/modulator and band pass filter applications

Chauhan, Diksha; Sbeah, Zen; Thakur, Mohindra Singh; Chang, Shih-Yu; Adhikari, Rammani

doi:10.1016/j.optmat.2022.112078

Cited by 12 publications

(6 citation statements)

References 71 publications

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“…These benefits made possible by all-dielectric systems demand instead dielectric materials of higher refractive indices, say, niobium pentoxides [6] (pp. [91][92][93] or electro-optic (EO) materials such as vanadium dioxides [66]. In this connection, we need data for not only heat capacity but also enthalpy of formation and Gibbs energy [67], which are necessary for accounting for conformational changes.…”

Section: Mechanical Properties Of Chiral Objectsmentioning

confidence: 99%

“…Optical materials exhibiting phase transitions upon temperature variations are employed for optical switches and modulators. For instance, vanadium dioxides undergo phase transitions between metallic and insulating states due to temperature variations which are caused in turn by externally applied electric potentials [66]. In optical devices based on vanadium dioxides should be designed by taking the lateral Poisson-ratio effects if typical feature sizes of a device are on the order of optical wavelengths.…”

Section: Temperature Dependence Of Chiralitymentioning

confidence: 99%

See 1 more Smart Citation

Thermal Effects on Optical Chirality and Associated Symmetry Properties

Lee¹,

Vaidya²,

Dwivedi³

2023

Preprint

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A review is here provided on the thermal effects on the optical chirality. To this goal, chiral objects dispersed in an embedding fluid are examined for their magnetoelectric coupling. Archetypal twisted-Omega particles are examined with respect to electron transport, phonon dynamics, and temperature effects. Continuum-mechanical aspect of thermo-elasticity is reviewed along with transverse deformations. A transition temperature delineating a sign flip in the chirality parameter is identified as well.

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Section: Mechanical Properties Of Chiral Objectsmentioning

confidence: 99%

Section: Temperature Dependence Of Chiralitymentioning

confidence: 99%

Thermal Effects on Optical Chirality and Associated Symmetry Properties

Lee¹,

Vaidya²,

Dwivedi³

2023

Preprint

View full text Add to dashboard Cite

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“…For each time step, the temperature of the filter is first determined using Eqs. (6)(7)(8) and then the optical constants of VO2 are calculated using Eq. ( 4).…”

Section: Optical Transmission Switchingmentioning

confidence: 99%

“…Another design utilized the refractive index change of VO2 to create a tunable optical response in a thin film structure [5]. A VO2 filled double cavity was designed for operation in the near IR that could act as band-pass filter or optical switch [6]. More recently, switchable transmission in the mid-IR range was demonstrated using a thin VO2 layer in a multilayer filter design [7].…”

Section: Introductionmentioning

confidence: 99%

Tunable directional filter for mid-infrared optical transmission switching

Butler¹,

Schulz²,

Argyropoulos³

2022

Opt. Express

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Controlling the spectral and angular response of infrared (IR) radiation is a challenging task of paramount importance to various emerging photonic applications. Here, we overcome these problems by proposing and analyzing a new design of a tunable narrowband directional optical transmission filter. The presented thermally controlled multilayer filter leverages the temperature dependent phase change properties of vanadium dioxide (VO2) to enable efficient and reversible fast optical switching by using a pump-probe laser excitation setup. More specifically, transmission is blocked for high intensity probe lasers due to the VO2 metallic properties induced at elevated temperatures while at low probe laser intensities high transmission through the filter occurs only for a narrowband IR range confined to near normal incident angles. The proposed multilayer composite dielectric filter is expected to have applications in optical communications, where it can act as dual functional infrared filter and optical switch.

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“…Based on these characteristics, plasmonic nanocircuits and waveguides are considered as potential substitutes for dielectric photonic devices, in particular for matching nanoscale electronic devices for optoelectronic modulation 10 . Related plasmonic optoelectronic components, such as modulators 11 – 14 , filters 15 – 17 , switches 18 – 21 , circuits 8 , 22 – 25 , sensors 26 , have been demonstrated and reported.…”

Section: Introductionmentioning

confidence: 99%

Enhancing on/off ratio of a dielectric-loaded plasmonic logic gate with an amplitude modulator

Chang

Lin

Lee

et al. 2023

Sci Rep

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Plasmonic waveguides allow focusing, guiding, and manipulating light at the nanoscale and promise the miniaturization of functional optical nanocircuits. Dielectric-loaded plasmonic (DLP) waveguides and logic gates have drawn attention because of their relatively low loss, easy fabrication, and good compatibility with gain and active tunable materials. However, the rather low on/off ratio of DLP logic gates remains the main challenge. Here, we introduce an amplitude modulator and theoretically demonstrate an enhanced on/off ratio of a DLP logic gate for XNOR operation. Multimode interference (MMI) in DLP waveguide is precisely calculated for the design of the logic gate. Multiplexing and power splitting at arbitrary multimode numbers have been theoretically analyzed with respect to the size of the amplitude modulator. An enhanced on/off ratio of 11.26 dB has been achieved. The proposed amplitude modulator can also be used to optimize the performance of other logic gates or MMI-based plasmonic functional devices.

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Theoretical analysis of VO2 filled double rectangular cavity-based coupled resonators for plasmonic active switch/modulator and band pass filter applications

Cited by 12 publications

References 71 publications

Thermal Effects on Optical Chirality and Associated Symmetry Properties

Thermal Effects on Optical Chirality and Associated Symmetry Properties

Tunable directional filter for mid-infrared optical transmission switching

Enhancing on/off ratio of a dielectric-loaded plasmonic logic gate with an amplitude modulator

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