Results 81 to 90 of about 486,399 (248)

Light trapping beyond the 4n^2 limit in thin waveguides [PDF]

, 2012
We describe a method for determining the maximum absorption enhancement in thin film waveguides based on optical dispersion relations. For thin film structures that support one, well-confined guided mode, we find that the absorption enhancement can ...
Atwater, Harry A., Callahan, Dennis M., Munday, Jeremy N.   +2 more
core   +1 more source

Polarization splitter using horizontal slot waveguide

Optics Express, 2012
In this paper a compact and efficient polarization splitter using horizontal slotted waveguides is presented. The splitter is designed by finite-difference-time-domain simulation and realized experimentally. The splitter is built by using a direction coupler consisting of two horizontal slotted waveguides and achieves a high extinction ratio of 14.1 ...
Zhang, H., Huang, Y., Das, S., Li, C., Yu, M., Lo, P.G.-Q., Hong, M., Thong, J.   +7 more
openaire   +2 more sources

Multi-slot optical Yagi-Uda antenna for efficient unidirectional radiation to free space

, 2013
Plasmonic nanoantennas are key elements in nanophotonics capable of directing radiation or enhancing the transition rate of a quantum emitter. Slot-type magnetic-dipole nanoantennas, which are complementary structures of typical electric-dipole-type ...
Cheon, Sangmo, Choe, Jong-Ho, Hwang, Sungwoo, Jeong, Heejeong, Kim, Jineun, Kim, Kinam, Kim, Un Jeong, Lee, Changwon, Lee, Jaesoong, Lee, Jongcheon, Park, Q-Han, Park, Yeonsang, Roh, Young-Geun, Song, In Yong   +13 more
core   +2 more sources

Silicon-Organic Hybrid (SOH) and Plasmonic-Organic Hybrid (POH) integration [PDF]

, 2016
Silicon photonics offers tremendous potential for inexpensive high-yield photonic-electronic integration. Besides conventional dielectric waveguides, plasmonic structures can also be efficiently realized on the silicon photonic platform, reducing device ...
Alloatti, L, Bogaerts, Wim, Bolten, J, Dalton, L, Elder, DL, Freude, W, Giesecke, AL, Hartmann, W, Koeber, S, Koehnle, K, Kohl, M, Koos, C, Korn, D, Kutuvantavida, Y, Lauermann, M, Leuthold, J, Melikyan, A, Muehlbrandt, S, Palmer, R, Pfeifle, J, Schindler, PC, Ummethala, S, Wahlbrink, T, Weimann, C, Wolf, S   +24 more
core   +2 more sources

Metalens‐Enabled Twisted Chromatic Dispersion

Advanced Physics Research, EarlyView.
We successfully demonstrate visible broadband twisted dispersion metalenses. As a proof of concept, we realized two distinct devices: the conical helical and the spring‐like dispersion‐controlled metalenses. These results rigorously validate the universality of our approach in customizing arbitrary continuous 3D dispersion trajectories, thereby ...
Shiyu Zheng, Boyan Fu, Hong Zhang, Shuming Wang   +3 more
wiley   +1 more source

Ultra-compact branchless plasmonic interferometers [PDF]

, 2018
Miniaturization of functional optical devices and circuits is a key prerequisite for a myriad of applications ranging from biosensing to quantum information processing.
Bozhevolnyi, Sergey I., Thomaschewski, Martin, Yang, Yuanqing   +2 more
core   +2 more sources

Unity Integration of Grating Slot Waveguide and Microfluid for Terahertz Sensing

Laser & Photonics reviews, 2018
Refractive index sensing is attracting extensive interest. Limited by the weak light–matter interaction and the broad bandwidth of resonance, the figure of merit (FoM) of terahertz (THz) sensors is much lower than their counterparts in visible and ...
Li Liang, Li Liang, Li Liang, Xin Hu, Long Wen, Yuhuan Zhu, Xianguang Yang, Jun Zhou, Yaxin Zhang, I. E. Carranza, J. Grant, C. Jiang, D. Cumming, Baojun Li, Qin Chen   +14 more
semanticscholar   +1 more source

Recent Advances in Stimulated Brillouin Scattering in Integrated Photonics

Advanced Physics Research, EarlyView.
This review systematically surveys recent advances in stimulated Brillouin scattering (SBS) within integrated photonics. It begins by elucidating the fundamental mechanisms of stimulated coupling between photons and acoustic phonons in nanoscale waveguides, enhanced by the photoelastic and moving boundary effects.
Songyue Liu, Qi Lu, Pan Hu, Yuan Zhong, Yu He, Yaojing Zhang, Young‐Ik Sohn, Yikai Su, Lu Sun   +8 more
wiley   +1 more source

Discussion of the Epsilon-Near-Zero Effect of Graphene in a Horizontal Slot Waveguide

IEEE Photonics Journal, 2014
Horizontal slot waveguides based on graphene have been considered an attractive structure for optical waveguide modulators for transverse magnetic (TM) modes. Graphene is embedded in the slot region of a horizontal slot waveguide.
Min-Suk Kwon
doaj   +1 more source

Design and research of single‐sided slotted waveguide antenna with a large beam declination

IET Microwaves, Antennas & Propagation, 2021
The slot of the conventional longitudinal slot antenna is alternately opened on both sides of the broadside. A novel single‐sided slot array with a large‐declination (biased towards the load) is proposed, in which the slots are only biased to the same ...
Chengwei Zhao, Xiaoping Li, Chao Sun, Lishan Tian, He Huang   +4 more
doaj   +1 more source