Highly tunable Terahertz filter with magneto-optical Bragg grating formed in semiconductor-insulator-semiconductor waveguides

Li, Kangwen; Ma, Xiaolong; Zhang, Zuyin; Wang, Lina; Hu, Haifeng; Xu, Yun; Song, Guofeng

doi:10.1063/1.4812703

Cited by 13 publications

(5 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…So it is a general feature that the surface mode can be found within the bulk mode stop bands. By employing the platform of the Semicondutor-Insulator-Semiconductor (SIS) waveguide with the Voigt configuration magnetization, which is a typical and widely used configuration for various plasmonic devices [16][17][18], we explore the coexistence mechanism from the point of the impedance matching condition for the excitation of SMPs. Additionally, how the factors such as insulator permittivity, applied magneticfield strength and waveguide width affect the coexisting frequency width of SMPs and BMPs is also given.…”

mentioning

confidence: 99%

The coexistence of surface magnetoplasmons (SMPs) and bulk magnetoplasmons (BMPs) in SIS waveguide with the Voigt configuration magnetization

Zhu

Wang

2016

EPL

View full text Add to dashboard Cite

The coexistence behavior of surface magnetoplasmons (SMPs) and bulk magnetoplasmons (BMPs) is discussed on a platform constructed by the Semicondutor-Insulator-Semiconductor (SIS) waveguide with the Voigt configuration magnetization. It is found that the coexistence of SMPs and BMPs stems from the nonzero off-diagonal terms of permittivity tensors of the top and the bottom semiconductor materials (SM) claddings which are induced by the external magnetic field. In this case, the impendence of SM for SMPs contains two contributions associated with both the transversal and the longitudinal wave vectors of SMPs. When the impendence matching condition of SMPs exciting in SIS waveguide is satisfied in the propagating band of BMPs, the coexistence of these two modes thus appears. The results show that the forwardpropagating SMPs only coexists with the lower BMPs mode, however, the backward-propagating SMPs coexists with the higher BMPs mode when the top and the bottom SM claddings are magnetized by equal amplitude magnetic field but with opposite direction. In addition, the influences of external-magnetic-field intensity, insulator permittivity and waveguide width on the coexisting frequency widths are also presented.

show abstract

mentioning

confidence: 99%

The coexistence of surface magnetoplasmons (SMPs) and bulk magnetoplasmons (BMPs) in SIS waveguide with the Voigt configuration magnetization

Zhu

Wang

2016

EPL

View full text Add to dashboard Cite

show abstract

“…For example, periodically arranged slot waveguides can be used as tunable filters. At first, this kind of filters were made of semiconductor gratings with subwavelength slits [69][70][71][72][73]. By changing the external magnetic fields, the propagation of SMPs in the slits is modulated, which leads to the shift of the transmission peak, as shown in Figure 6A and B.…”

Section: Surface Magneto Plasmons In Slot Waveguides and Their Applicmentioning

confidence: 99%

“…By changing the external magnetic fields, the propagation of SMPs in the slits is modulated, which leads to the shift of the transmission peak, as shown in Figure 6A and B. In 2013, a terahertz (THz) wave filter consists of Bragg grating structure is proposed [71]. Both magnetic field tuning and high Q-value was able to be realized ( Figure 6C).…”

Section: Surface Magneto Plasmons In Slot Waveguides and Their Applicmentioning

confidence: 99%

Surface magneto plasmons and their applications in the infrared frequencies

Zhang

Wang

2015

Nanophotonics

View full text Add to dashboard Cite

Due to their promising properties, surface magneto plasmons have attracted great interests in the field of plasmonics recently. Apart from flexible modulation of the plasmonic properties by an external magnetic field, surface magneto plasmons also promise nonreciprocal effect and multi-bands of propagation, which can be applied into the design of integrated plasmonic devices for biosensing and telecommunication applications. In the visible frequencies, because it demands extremely strong magnetic fields for the manipulation of metallic plasmonic materials, nano-devices consisting of metals and magnetic materials based on surface magneto plasmon are difficult to be realized due to the challenges in device fabrication and high losses. In the infrared frequencies, highly-doped semiconductors can replace metals, owning to the lower incident wave frequencies and lower plasma frequencies. The required magnetic field is also low, which makes the tunable devices based on surface magneto plasmons more practically to be realized. Furthermore, a promising 2D material-graphene shows great potential in infrared magnetic plasmonics. In this paper, we review the magneto plasmonics in the infrared frequencies with a focus on device designs and applications. We investigate surface magneto plasmons propagating in different structures, including plane surface structures and slot waveguides. Based on the fundamental investigation and theoretical studies, we illustrate various magneto plasmonic micro/ nano devices in the infrared, such as tunable waveguides, filters, and beam-splitters. Novel plasmonic devices such as one-way waveguides and broad-band waveguides are also introduced.

show abstract

“…Surface plasmon resonance (SPR) on the metal/dielectric interface collective oscillation of charged carriers on sub-wavelength scales provides a combination of electronics and photonics, which makes for a wide range of applications [1,2]. Surface plasmon resonance properties depend on the nanostructure of cell plasmon geometry, size, composition and optical polarization [3,4].…”

Section: Introductionmentioning

confidence: 99%

A Tunable Plasmonic Refractive Index Sensor with Nanoring-Strip Graphene Arrays

Cen

Lin

Huang

et al. 2018

Sensors

View full text Add to dashboard Cite

In the present study, we design a tunable plasmonic refractive index sensor with nanoring-strip graphene arrays. The calculations prove that the nanoring-strip have two transmission dips. By changing the strip length L of the present structure, we find that the nanoring-strip graphene arrays have a wide range of resonances (resonance wavelength increases from 17.73 μm to 28.15 μm). When changing the sensing medium refractive index nmed, the sensitivity of mode A and B can reach 2.97 μm/RIU and 5.20 μm/RIU. By changing the doping level ng, we notice that the transmission characteristics can be tuned flexibly. Finally, the proposed sensor also shows good angle tolerance for both transverse magnetic (TM) and transverse electric (TE) polarizations. The proposed nanoring-strip graphene arrays along with the numerical results could open a new avenue to realize various tunable plasmon devices and have a great application prospect in biosensing, detection, and imaging.

show abstract

Highly tunable Terahertz filter with magneto-optical Bragg grating formed in semiconductor-insulator-semiconductor waveguides

Cited by 13 publications

References 22 publications

The coexistence of surface magnetoplasmons (SMPs) and bulk magnetoplasmons (BMPs) in SIS waveguide with the Voigt configuration magnetization

The coexistence of surface magnetoplasmons (SMPs) and bulk magnetoplasmons (BMPs) in SIS waveguide with the Voigt configuration magnetization

Surface magneto plasmons and their applications in the infrared frequencies

A Tunable Plasmonic Refractive Index Sensor with Nanoring-Strip Graphene Arrays

Contact Info

Product

Resources

About