Results 21 to 30 of about 2,015 (189)

High coupling efficiency to a low dispersion slow light-supporting photonic crystal waveguide [PDF]

Journal of the European Optical Society-Rapid Publications, 2013
In this paper, we design a waveguide on photonic crystal slab for propagation of low-dispersion slow light. By shifting the air holes adjacent to the waveguide, we obtain a photonic crystal waveguide with a group index of 25 in 25 nm bandwidth which ...
Moghaddam M. Khatibi, Attari A. R., Mirsalehi M. M.   +2 more
doaj   +1 more source

A Terahertz Circulator Based on Magneto Photonic Crystal Slab

Photonics, 2023
In this paper, a terahertz circulator based on a magneto photonic crystal slab is envisaged. The triangular lattice photonic crystals with a line defect waveguide were constructed on an Al2O3 ceramic slab.
Biaogang Xu, Dengguo Zhang, Yong Wang, Binbin Hong, Guoxiang Shu, Wenlong He   +5 more
doaj   +1 more source

Dispersion-free characterization of terahertz slab–waveguide modal confinement based on a metal Bragg grating structure

Results in Physics
Photonic waveguide structures that use periodic metal grooves and periodically perforated metal slits (PPMSs) can laterally confine Sommerfeld and Zenneck surface waves of metals with the electric field accumulation among metal interspaces in the ...
Borwen You, Che-Chu Hsieh, Ryuji Iwasa, Hung-Yi Tsai, Yen-Shan Lin, Liang-Cheng Yu, Pin-Jung Lu, Shiun-Yun Chang, Yuan-Chi Wu   +8 more
doaj   +1 more source

On the coupling of forward and backward slow waves supported by the waveguide configuration of a dielectric sandwiched between two plasma slabs

Advanced Electromagnetics, 2020
We derived a general equation governing the spectra of electrostatic surface plasmons supported by a waveguide structure of two identical plasma slabs separated by a dielectric medium.
E. Yasin, A. AlKhateeb, F. Rawwagah, A. Abuzir   +3 more
doaj   +1 more source

Controllable Patterning of Metallic Photonic Crystals for Waveguide–Plasmon Interaction

Nanomaterials, 2023
Waveguide–plasmon polaritons sustained in metallic photonic crystal slabs show fascinating properties, such as narrow bandwidth and ultrafast dynamics crucial for biosensing, light emitting, and ultrafast switching.
Yuanhai Lin, Deqing Che, Wenjie Hao, Yifei Dong, Heng Guo, Junsheng Wang, Xinping Zhang   +6 more
doaj   +1 more source

Sensitivity investigation of the microfiber-toslab evanescent wave sensors

MATEC Web of Conferences, 2018
Microfiber-to-slab sensor is comprised of a tapered fiber in evanescent contact with a multimode slab waveguide. The effects of the sensor configuration parameters on its evanescent wave sensitivity were investigated through theoretical analysis.
Li Xianli
doaj   +1 more source

A 1064 nm Deep-Etched Wide-Ridge Waveguide Slab-Coupled Photonic Crystal Semiconductor Laser

Photonics
Semiconductor lasers are key devices in optical communication, optical storage and other fields. Achieving single-mode, high-power and high-beam-quality output is an important research goal in laser technology. Conventional slab-coupled optical waveguide
Jianxin Zhang, Gaoben Shi, Xiaoyun Liu, Haizhu Sun, Xinmin Fan, Pingping Wang, Yan Wang, Fuyong Qin, Zaifa Du   +8 more
doaj   +1 more source

Solution‐Processed Mn‐Doped 2d Perovskite Wavelength Shifters for Noble‐Liquid Photon Detection

Advanced Functional Materials, EarlyView.
Solution‐processed Mn2+‐doped PEA2PbBr4 two‐dimensional perovskite films are demonstrated as large‐area wavelength shifters for noble‐liquid photon detectors. Mn2+ incorporation introduces a broad emission band at ∼620 nm with a large Stokes shift, suppressing self‐absorption and matching SiPM sensitivity.
Elisabetta Colantoni, Laura Basiricò, Andrea Ciavatti, Nicolò Tosi, Valentina Cicero, Massimo Loriggiola, Beatrice Fraboni   +6 more
wiley   +1 more source

Refractive Index Engineering With Subwavelength Gratings in Silicon Microphotonic Waveguides

IEEE Photonics Journal, 2011
In this review, we summarize and discuss our recent studies of subwavelength grating (SWG) structures for engineering the refractive index of silicon microphotonic waveguides. The SWG effect allows control of the effective refractive index of a waveguide
J. H. Schmid, P. Cheben, P. J. Bock, R. Halir, J. Lapointe, S. Janz, A. Delage, A. Densmore, J.-M. Fedeli, T. J. Hall, B. Lamontagne, R. Ma, I. Molina-Fernandez, D.-X. Xu   +13 more
doaj   +1 more source

Shallow etched low-loss thin film lithium niobate waveguides with bound states in the continuum

AIP Advances, 2023
Thin film lithium niobate (TFLN) features a small photonic device footprint and excellent optical properties. Despite the recent progress on plasma-etched TFLN waveguides, scattering loss induced by the sidewall roughness still limits the performance of ...
Yun Kang
doaj   +1 more source