Fano resonance and tunability of optical response in double-sided dielectric gratings

Zheng, Gaige; Zhao, Lilong; Qian, Liming; Xian, Fenglin; Xu, Linhua

doi:10.1016/j.optcom.2015.09.036

Cited by 5 publications

(4 citation statements)

References 33 publications

(37 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The bandwidth of the filtered spectrum can be made particularly narrow using a weak in‐coupling and out‐coupling efficiency with, for example, shallow gratings ( Figure a) . When used as narrow bandpass spectral filters in either transmission or reflection, RWGs are characterized by a spectral response which can be identified to a Fano lineshape . RWGs can theoretically reach 100% of reflection efficiency when their profile is vertically or horizontally symmetric or when integrated with quarter‐wave Bragg stacks .…”

Section: Effects Associated With Rwgsmentioning

confidence: 99%

Recent Advances in Resonant Waveguide Gratings

Quaranta

Basset

Martin

et al. 2018

Laser & Photonics Reviews

321

199

View full text Add to dashboard Cite

Resonant waveguide gratings (RWGs), also known as guided mode resonant (GMR) gratings or waveguide‐mode resonant gratings, are dielectric structures where these resonant diffractive elements benefit from lateral leaky guided modes from UV to microwave frequencies in many different configurations. A broad range of optical effects are obtained using RWGs such as waveguide coupling, filtering, focusing, field enhancement and nonlinear effects, magneto‐optical Kerr effect, or electromagnetically induced transparency. Thanks to their high degree of optical tunability (wavelength, phase, polarization, intensity) and the variety of fabrication processes and materials available, RWGs have been implemented in a broad scope of applications in research and industry: refractive index and fluorescence biosensors, solar cells and photodetectors, signal processing, polarizers and wave plates, spectrometers, active tunable filters, mirrors for lasers and optical security features. The aim of this review is to discuss the latest developments in the field including numerical modeling, manufacturing, the physics, and applications of RWGs. Scientists and engineers interested in using RWGs for their application will also find links to the standard tools and references in modeling and fabrication according to their needs.

show abstract

Section: Effects Associated With Rwgsmentioning

confidence: 99%

Recent Advances in Resonant Waveguide Gratings

Quaranta

Basset

Martin

et al. 2018

Laser & Photonics Reviews

321

199

View full text Add to dashboard Cite

show abstract

“…Although high efficiency can be obtained in high-density gratings and 2D gratings with polarizationdependent or polarization-independent properties, there are still few reports of designing bidirectional gratings to achieve dual-functional outputs with polarization-dependent and polarization-independent properties. On the other hand, a tunable resonant double-sided dielectric grating was designed to work as an optical refractive index sensor [28]. The above work proved the feasibility of the double-sided grating design and provided inspiration for the double-sided grating design.…”

Section: Introductionmentioning

confidence: 72%

Double-sided structure grating for dual-functional polarizing or non-polarizing splitter

Huang,

Wang

2024

Phys. Scr.

View full text Add to dashboard Cite

In this paper, a novel bidirectional dual-functional metal-dielectric reflective grating with a double-sided structure is described, which can achieve transverse-electric (TE) polarization in the -1st order and transverse-magnetic (TM) polarization in the 0th order as a polarizing beam splitter in the upper part of the grating or TE and TM polarizations in the -1st order with polarization-independent property in the lower part of the grating. The proposed grating works at wavelength 1550 nm under Littrow mounting. Rigorous coupled-wave analysis (RCWA) is used to optimize grating parameters. The upper part can achieve diffraction efficiencies of 99.53% and 99.11% for TE polarization in the -1st order and TM polarization in the 0th order, respectively. In addition, the extinction ratios of -1st order and 0th order are 58.87 dB and 52.02 dB, respectively. The lower part can achieve diffraction efficiencies of 99.41% and 99.26% for TE and TM polarizations in the -1st order, respectively. Furthermore, wide incident wavelength and angular bandwidths can be obtained in both the upper and lower parts. Such a high-efficiency dual-functional grating has a wide range of applications in optical systems.

show abstract

“…In nanophotonics, grating structures are often used to achieve Fano resonance, which is due to the ability of grating structures to combine with various dielectric or metallic materials to more easily excite narrower resonance peak spectral curves and thus obtain higher sensitivity [ 9 , 10 ]. Zheng et al [ 11 ] proposed a tunable resonant two-sided dielectric grating structure, which uses a vertically incident plane wave to excite. The maximum electric field intensity in the grating spacer layer of this structure was increased by a factor of 35 compared to the incident field, and the sensitivity reached 602.15 nm/RIU.…”

Section: Introductionmentioning

confidence: 99%

Study of Fano Resonance Effects in Graphene-Grating Composite Structures

Cui

Liu

Yang

2022

Computational Intelligence and Neuroscience

View full text Add to dashboard Cite

In order to optimize the sensitivity and detection accuracy of Fano resonance optical sensors, a sensing model of graphene-grating composite micro-nanostructure with high sensing performance is proposed based on the optical properties of graphene and grating. By studying the reflection spectra and field distribution characteristics of the structure, the sensing mechanism of Fano resonance generated by the structure is elaborated, and the parameters affecting the Fano resonance sensing performance are analyzed to enhance the Fano resonance sensing performance by optimizing the structural parameters, and the Fano resonance reflection spectral curve with high-sensitivity and high-quality factor (FOM) value is obtained. The results show that when the grating period P = 300 nm, the grating height T1 = 110 nm, and the silver film thickness T2 = 30 nm, the sensitivity of the structure is 980 nm/RIU and the quality factor FOM is 770RIU−1 by changing the refractive index of the material to be measured.

show abstract

Fano resonance and tunability of optical response in double-sided dielectric gratings

Cited by 5 publications

References 33 publications

Recent Advances in Resonant Waveguide Gratings

Recent Advances in Resonant Waveguide Gratings

Double-sided structure grating for dual-functional polarizing or non-polarizing splitter

Study of Fano Resonance Effects in Graphene-Grating Composite Structures

Contact Info

Product

Resources

About