Results 31 to 40 of about 50,260 (318)

Waveguide group velocity determination by spectral interference measurements in near-field optical scanning microscopy [PDF]

, 2006
Measurement of spectral interference with a near-field scanning optical microscope is used to determine directly the variation of group velocity between modes of a planar slab waveguide as the modes propagate along the ...
J.J. Baumberg, T. Chaipiboonwong, Chaipiboonwong, T., W.S. Brocklesby, Netti, M.C., J. D. Mills, Brocklesby, W.S., M.E. Zoorob, Mills, J.D., M.C. Netti, Zoorob, M.E., Baumberg, Jeremy, M.D.B Charlton, Charlton, Martin   +13 more
core   +1 more source

Large on-chip Brillouin net amplification in silicon-based nano-photonics

AIP Advances, 2019
Recent developments in on-chip forward Brillouin scattering open up potential applications such as RF photonic signal processing, on-chip Brillouin amplification, and on-chip Brillouin lasers.
Hyeongpin Kim, Heedeuk Shin
doaj   +1 more source

Analysis of Waveguides on Lithium Niobate Thin Films

Crystals, 2018
Waveguides formed by etching, proton-exchange (PE), and strip-loaded on single-crystal lithium niobate (LN) thin film were designed and simulated by a full-vectorial finite difference method.
Yiwen Wang, Zhihua Chen, Hui Hu
doaj   +1 more source

Slot-Waveguide Based All-Optical RF Spectrum Analyzer

Photonics, 2023
All-optical radio-frequency spectrum analyzers (AORFSAs) with ultrabroad bandwidth break the electronic bottleneck and provide an efficient frequency analysis means for ultrafast optical signals in communications, signal generation and processing systems.
Yuhua Li, Zhe Kang, Wai-Lok Ho, Roy R. Davidson, Brent E. Little, Sai-Tak Chu, Kun Zhu   +6 more
doaj   +1 more source

Invisible Polymer Walls Enhance Reorientational Optical Nonlinearity in Oligothiophene‐Doped Liquid Crystals

Advanced Functional Materials, EarlyView.
The polymer wall stabilized dye‐doped liquid crystals (PWLCs) enhance the sensitivity of photoinduced molecular reorientation in dye‐doped LC systems. The PWLC with an invisible polymer wall successfully reduces the threshold intensity and functions as an optical limiter under the incidence of low intensity light laser source.
Junki Yokota, Yuya Nakata, Erika Katayama, Miho Aizawa, Kyohei Hisano, Shoichi Kubo, Atsushi Shishido   +6 more
wiley   +1 more source

Electromagnetic modelling of a monolithic pulse reshaper based on a photonic crystal waveguide integrated with a SOA [PDF]

, 2006
Finite difference time domain (FDTD) and finite element (FE) frequency domain methods are used to study the propagation of arbitrary chirped pulses in photonic crystal (PhC) waveguide.
M. Cryan, I. Craddock, T. Karle, T. Cao, Cao, T., I. Galbraith, Ivanov, P, Zhang, J-Z, Karle, TJ, Railton, C. J., Yu, S., J. Rorison, Cao, T, Rorison, JM, Zhang, J. Z., Ivanov, P. S., Karle, T. J., Cryan, MJ, Craddock, I. J., Cryan, M. J., C. Railton, S. Yu, J.-z. Zhang, Galbraith, I, Craddock, IJ, Galbraith, I., Rorison, J., Railton, CJ, P. Ivanov, Yu, S   +29 more
core   +1 more source

The femtosecond laser fabrication of waveguide structures in transparent crystals

APL Photonics
An optical waveguide is the basic structure of quantum optics, which has a strong confinement effect on light. It can complete the low-loss transmission of light and the enhancement of the nonlinear effect.
Zhi-Ming Huo, Gong Wang, Yun-Fei Li, He Cao, Zishuo Xu, Zheng Wang, Ren Zhang, Dong-Zhou Wang, Yu Yu, Yulei Wang, Zhiwei Lu   +10 more
doaj   +1 more source

Optical characteristics of an oxyfluoride glass waveguide formed by a proton implantation

Results in Physics, 2018
An optical waveguide was fabricated by H+ ion implantation with an energy of 400 keV and a dose of 8 × 1016 ions/cm2 in the oxyfluoride glass for the first time to the best of our knowledge. The dark mode spectra of the waveguide were measured by a prism
Yue Wang, Yuan Shen, Rin-Lin Zheng, Jian-Ping Shen, Hai-Tao Guo, Chun-Xiao Liu   +5 more
doaj   +1 more source

Optical fibre taper-enabled waveguide photoactuators

Nature Communications, 2022
Despite promising devices, waveguide photoactuators actuating performances have been fundamentally restricted by the nature of standard optical fibres. To overcome these challenges, authors propose an optical fibre taper-enabled waveguide photoactuator ...
Jianliang Xiao, Tao Zhou, Ni Yao, Shuqi Ma, Chenxinyu Pan, Pan Wang, Haoran Fu, Haitao Liu, Jing Pan, Longteng Yu, Shipeng Wang, Wenzhen Yang, Limin Tong, Lei Zhang   +13 more
doaj   +1 more source

Oxidized MoS2‐Based Multifunctional Memristive Hardware for Energy‐Efficient mmWave Signal Processing and In‐Memory Matrix Multiplication

Advanced Functional Materials, EarlyView.
Thermally oxidized MoS2‐based radio‐frequency switches enable a multifunctional platform that unifies broadband RF switching and in‐memory computation. The device achieves a cutoff frequency of 33.2 THz with high energy efficiency and supports hardware‐aware signal processing.
Juho Son, Changwoo Pyo, Sungmoon Park, Yoongi Cho, Seungchan Lee, Myungsoo Kim   +5 more
wiley   +1 more source