All-optical bistable logic control based on coupled Tamm plasmons

Abstract

A method for realizing low-threshold all-optical bistable logic control is proposed based on Tamm plasmons (TPs), which are formed in an asymmetric dielectric Bragg reflector (DBR)-metal-DBR (ADMD) structure with a layer of Kerr medium embedded. The ADMD structure supports two TPs due to coupling of trapped modes at each metal-DBR interface, generating two dips in the structure's reflection spectrum. Thus, control (i.e., pump) and controlled (i.e., probe) light with wavelengths close to the two dips, respectively, can be imported. It is verified theoretically that, thanks to the enhanced Kerr nonlinearity related to excitation of high-quality TP, bistable switching at very low injection intensity can be initiated by strength or direction variation of the pump. Meanwhile, the probe changes correspondingly with the pump. Thus, all-optical bistable logic operation of the probe can be controlled by the pump.

Spin-Dependent Polaritonic Flip-Flop Operation in Semiconductor Microcavity

“…In this paper, we consider both intensity and polarization of the polariton. Using the typically microcavity structure and parameters of a single DBR-InGaAs-DBR (Distributed Bragg Reflector) quantum well, a spin-dependent model that describes the coupling between excitonic and photonic components of the polariton is used [5,15,25,27].…”

“…Non-linear phenomena such as optical parametric oscillation, bistable/multistable behaviour, coherent soliton and Josephson oscillation have also been reported [13][14][15][16][17][18][19][20][21]. In addition, novel polariton-based bistable logical devices, all-optical switching Manuscript and light-emitting devices taking advantages of low loss, high speed, low threshold and compact structure of microcavity have been proposed subsequently [22][23][24][25][26].…”

Model for confined Tamm plasmon devices

“…Tamm single-photon sources have been demonstrated with InGaAs/GaAs quantum dots (QDs) emitting at 910 nm [7] and InP/GaInP QDs emitting at 656 nm [8]. Other proposed device applications of Tamm modes include alloptical bistable logic [9], multichannel filters [10] and novel forms of sensors [11,12].…”

Plasmonic circuits for manipulating optical information

“…There have been many devices proposed and simulated, such as modulation based on an external electrical signal interacting with graphene to create NOR/AND, NAND/OR, XNOR/XOR gates [102]; third-order non-linear optical materials in which the electric field intensity |E| 2 of the plasmon induces refractive index changes, also known as Kerr-nonlinearity [103][104][105][106][107]; intense optical pulses to induce refractive index changes in GaAsInP [108]; polarization sensitive four-wave mixing non-linearity coupled to a plasmon ring resonator [109,110]; metal-dielectric cavities filled with non-linear materials to create bistability [111] or switching [112]; a three-level system showing gain [62]; beam steering by modulating refractive index [113,114]; electro-active materials to shift refractive index [115,116]; and change in resonance by changing refractive index [117] or by changing material properties by electron excitation pumped by light [118,119] (changes absorption properties within a waveband). One novel device modulated a plasmon wave on a diffraction grating by changing the refractive index of a surface layer of fluid [120].…”