Results 101 to 110 of about 3,448,612 (259)

Coupled-Resonator Optical Waveguides and Multiplexed Solitons [PDF]

, 2003
Whether over micron-long or kilometer-long distances, periodic phenomena can strongly affect both the propagation and the confinement of optical pulses.
Mookherjea, Shayan
core   +1 more source

Electrically Reconfigurable Optical Initialization of Spin Valley Polarization in Monolayer WS2 Enabled by Switchable Dual‐Mode Liquid Crystal Lasers

Advanced Optical Materials, EarlyView.
This work presents an electrically controllable approach to spin–valley polarization in monolayer WS2 by integrating it with a dual‐mode liquid crystal laser. Applying an external field triggers phase transitions that switch the laser emission between helicity‐defined band‐edge lasing and unpolarized random lasing.
Yu‐Chuan Tsao, Ya‐Ping Hsieh, Yang‐Fang Chen, Hui‐Yu Chen   +3 more
wiley   +1 more source

Advanced DSP for high spectral efficiency and flexible optical communications

, 2014
2014 13th International Conference on Optical Communications and Networks, ICOCN 2014, Suzhou, 9-10 November 2014We discuss recent advances in DSP techniques for adaptive transmissions supporting software-defined flexible transponders and Elastic Optical
Gao, Y, Lu, C, Sui, Q, Chao Lu, Lau, APT, Alan Pak Tao Lau, Yuliang Gao, Qi Sui   +7 more
core   +1 more source

Subwavelength Energy Transport Along a Dielectric Nanoparticle Chain in a Metal Slot

IEEE Photonics Journal, 2013
Subwavelength energy transportation along a dielectric nanoparticle chain in a metal slot is investigated. It is demonstrated that subwavelength resonance modes with nanoscale confinement could be well achieved in the proposed waveguide, free from the ...
Bing Shen, Yongqing Huang, Xiaofeng Duan, Xiaomin Ren, Xia Zhang, Qi Wang   +5 more
doaj   +1 more source

Wavelength‐Multiplexed 2D Beam Steering via a Passive Diffractive Network

Advanced Optical Materials, EarlyView.
Illustration of a wavelength‐multiplexed diffractive beam steering system, which is composed of K cascaded diffractive layers, each containing phase‐modulating elements that are jointly optimized using deep learning–based optimization. When illuminated with a set of wavelengths {λ1,λ2,…,λNw}$\{ {{{\lambda }_1},{{\lambda }_2},\ldots ,{{\lambda }_{{{N}_w}
Che‐Yung Shen, Yuhang Li, Çağatay Işıl, Tianyi Gan, Mona Jarrahi, Aydogan Ozcan   +5 more
wiley   +1 more source

High speed train communications systems using free space optics [PDF]

, 2010
In this work, we propose a broad-band free space optical (FSO) wireless communications system for high-speed trains. The system consists of optical transceivers positioned outside the train and along the railway track.
Ghassemlooy, Zabih, Paudel, Rupak, Rajbhandari, Sujan, Le Minh, Hoa, Iaz, M.   +4 more
core  

Helicity‐Dependent All‐Optical Switching in Bi,Ga‐Substituted Rare‐Earth Iron Garnet Films Driven by Orbital Magnetic Moment

Advanced Optical Materials, EarlyView.
Helicity‐dependent all‐optical magnetization switching was demonstrated for the Bi‐ and Ga‐substituted rare‐earth (R) iron garnet crystal thin films (Bi,Ga:RIG; R = Eu3+, Nd3+, and Y3+). The efficiency followed the order EIG > NIG > YIG. These results show the correlation between 4f orbital moment (4f〈L〉) of R3+ and helicity‐dependent optical ...
Ayumu Hata, Ryuichiro Asatani, Saiki Suzuki, Md Abdullah Al Masud, Hotaka Sakaguchi, Jun Okabayashi, Shinji Isogami, Takayuki Ishibashi   +7 more
wiley   +1 more source

Integrated Multifrequency Recognition and Downconversion Based on Photonics-Assisted Compressive Sampling

IEEE Photonics Journal, 2012
On the basis of photonics-assisted compressive sampling (CS), we demonstrate for the first time an integrated system with the capacity of multifrequency recognition and downconversion of intercepted radio frequency (RF) component.
Li Yan, Yitang Dai, Kun Xu, Jian Wu, Yan Li, Yuefeng Ji, Jintong Lin   +6 more
doaj   +1 more source

Metasurface-driven polarization-division multiplexing of PCSEL for optical communications. [PDF]

Discov Nano, 2023
Miao WC, Chang CH, Hsiao FH, Chang YH, Huang JH, Su HT, Lin CY, Lin CL, Chow CW, Hong YH, Huang YW, Kuo HC.   +11 more
europepmc   +1 more source

Extrinsic Limitations of Stealthy Hyperuniform Devices

Advanced Optical Materials, EarlyView.
Stealthy hyperuniform devices exhibit a scattering‐free angular region whose extent follows a simple quenching equation. Experimental measurements confirm this prediction but reveal quenching efficiencies far below theoretical expectations. Multiple scattering and finite‐size effects are quantified, establishing realistic performance limits for ...
Yuhao Xu, Miao Chen, Louis Forestier, Franck Carcenac, Laurent Mazenq, Philippe Lalanne   +5 more
wiley   +1 more source