Possible mechanisms of switching in symmetrical two-ports based on 2D photonic crystals with magneto-optical resonators

Dmitriev, Victor; Portela, Gianni; Zimmer, Daimam

doi:10.1364/ol.38.004040

Cited by 10 publications

(6 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, electro-optical Mach-Zehnder interferometer is a typical elements in optical circuits [2]. In photonic crystal technology, many types of switches were also suggested [3].…”

Section: Introductionmentioning

confidence: 99%

Tunable THz and Infrared Plasmonic Filters and Switches Based on Circular Graphene Resonator With 90$^\circ$ Bending of Output Port

2020

Self Cite

View full text Add to dashboard Cite

Two types of novel graphene-based components, namely, filters and electro-optical switches in guided wave configuration are suggested and analysed. The filters differ from the known ones with collinear orientation of the input and output waveguides by geometry and symmetry. The components consist of a circular graphene disk and two nanoribbons oriented at 90 • to each other in the plane of the graphene layer. The graphene elements are placed on a dielectric substrate. We show that change in symmetry leads to a drastic change in the properties of the components. The physical principle of the devices is based on the dipole, quadrupole and hexapole resonances in the graphene disk which define stop-band, pass-band and stop-band frequency characteristics, respectively. A combination of stop-band and pass-band filter properties by shifing the electronic Fermi level allows one to design a switch. Numerical simulations show that the suggested components have very small dimensions, good characteristics and provide a dynamic control of their central frequency via electrostatic gating.

show abstract

“…In particular, electro-optical Mach-Zehnder interferometer is a typical elements in optical circuits [2]. In photonic crystal technology, many types of switches were also suggested [3].…”

Section: Introductionmentioning

confidence: 99%

Tunable THz and Infrared Plasmonic Filters and Switches Based on Circular Graphene Resonator With 90$^\circ$ Bending of Output Port

2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…In particular, electro-optical Mach-Zehnder interferometer is a typical elements in optical circuits [10]. In photonic crystal technology, several types of switches were also suggested [11].…”

Section: Introductionmentioning

confidence: 99%

Tunable THz Switch-Filter Based on Magneto-Plasmonic Graphene Nanodisk

Dmitriev,

Melo,

Castro

2020

Preprint

Self Cite

View full text Add to dashboard Cite

We propose and analyze a multifunctional THz device which can operate as a tunable switch and a filter. The device consists of a circular graphene nanodisk coupled to two nanoribbons oriented at 90 • to each other. The graphene elements are placed on a dielectric substrate. The nanodisk is magnetized by a DC magnetic field normal to its plane. The physical principle of the device is based on the propagation of surface plasmon-polariton waves in the graphene nanoribbons and excitation of dipole modes in the nanodisk. Numerical simulations show that 0.61T DC magnetic field provides transmission (regime ON) at the frequency 5.33 THz with the bandwidth 12.7% and filtering with the Q-factor equals to 7.8. At the central frequency, the insertion loss is around -2 dB and the reflection coefficient is -43 dB. The regime OFF can be achieved by means of switching DC magnetic field to zero value or by switching chemical potential of the nanodisk to zero with the ON/OFF ratio better than 20 dB. A small central frequency tuning by chemical potential is possible with a fixed DC magnetic field.

show abstract

“…In our previous article , we suggested two‐dimensional (2D) PhC switches based on MO resonator and discussed two possible mechanisms of switching. In nonmagnetized ferrite resonator, the mechanism is based on a standing mode (usually dipole one).…”

Section: Introductionmentioning

confidence: 99%

“…The bandwidth of the switches discussed in depends on many factors. Among others, the bandwidth is defined by mechanism of switching, that is, by the type of resonator modes (standing or rotating) involved in the switching process.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Wideband compact 2D photonic crystal switch based on ferrite resonator in square lattice with 90° bending

Dmitriev

Zimmer

Portela

2015

Microw. Opt. Technol. Lett.

Self Cite

View full text Add to dashboard Cite

We suggest and analyse theoretically a wideband switch with a very simple and compact structure. It consists of a 90°‐waveguide bending in a photonic crystal with square unit cell and a circular ferrite cylinder placed in the bending. The state OFF of the switch corresponds to the nonmagnetized ferrite. The structure of the standing wave in the input waveguide with a node oriented along the output waveguide prevents excitation of the output waveguide. In the state ON, different resonant modes of the magnetized ferrite resonator provide high transmission from input port to output one, namely, both clockwise and anticlockwise dipole rotating modes, the standing dipole mode which is the sum of the two rotating modes and also a travelling wave. Our numerical simulations show that in the subterahertz region, the switch possesses the frequency band of 8% at the levels of insertion losses lower than −2 dB and isolation better than −22 dB. This bandwidth is one order of magnitude higher than that reported in the literature for switches of this type. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:238–242, 2016

show abstract

Possible mechanisms of switching in symmetrical two-ports based on 2D photonic crystals with magneto-optical resonators

Cited by 10 publications

References 12 publications

Tunable THz and Infrared Plasmonic Filters and Switches Based on Circular Graphene Resonator With 90$^\circ$ Bending of Output Port

Tunable THz and Infrared Plasmonic Filters and Switches Based on Circular Graphene Resonator With 90$^\circ$ Bending of Output Port

Tunable THz Switch-Filter Based on Magneto-Plasmonic Graphene Nanodisk

Wideband compact 2D photonic crystal switch based on ferrite resonator in square lattice with 90° bending

Contact Info

Product

Resources

About