Sphere dimers of high refractive index dielectric particles as elementary units for building optical switching devices

2017 ◽  
Author(s):  
A. I. Barreda ◽  
H. Saleh ◽  
A. Litman ◽  
F. Gonzalez ◽  
F. Moreno ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Switching ◽  
High Refractive Index ◽  
Dielectric Particles ◽  
Optical Switching Devices ◽  
Switching Devices

DFB Waveguide All-Optical Switching Devices Employing Pump-Induced Refractive Index Change in GaInAsP

2007 ◽  
Vol 31 ◽  
pp. 206-208 ◽  
Author(s):  
Tetsuya Mizumoto ◽  
Yoichi Akano ◽  
Kazuhiko Tamura ◽  
Masaki Yoshimura
Keyword(s):  
Refractive Index ◽  
Optical Switching ◽  
Refractive Index Change ◽  
Distributed Feedback ◽  
Temporal Response ◽  
Index Change ◽  
All Optical ◽  
Optical Switching Devices ◽  
All Optical Switching ◽  
Switching Devices

A pump-induced refractive index change was measured in a passive GaInAsP waveguide together with its temporal response. Also, the temporal response of distributed feedback (DFB) waveguide transmittance modulated by the pump-induced index change was experimentally investigated for an application to all-optical switching devices.

scholarly journals Suppression of scattering for small dielectric particles: anapole mode and invisibility

2017 ◽  
Vol 375 (2090) ◽  
pp. 20160069 ◽  
Author(s):  
Boris Luk'yanchuk ◽  
Ramón Paniagua-Domínguez ◽  
Arseniy I. Kuznetsov ◽  
Andrey E. Miroshnichenko ◽  
Yuri S. Kivshar
Keyword(s):  
Refractive Index ◽  
Electric Dipole ◽  
Fano Resonance ◽  
Optical Materials ◽  
High Refractive Index ◽  
Destructive Interference ◽  
Total Scattering ◽  
Dipole Radiation ◽  
New Horizons ◽  
Dielectric Particles

We reveal that an isotropic, homogeneous, subwavelength particle with high refractive index can produce ultra-small total scattering. This effect, which follows from the inhibition of the electric dipole radiation, can be identified as a Fano resonance in the scattering efficiency and is associated with the excitation of an anapole mode in the particle. This anapole mode is non-radiative and emerges from the destructive interference of electric and toroidal dipoles. The invisibility effect could be useful for the design of highly transparent optical materials. This article is part of the themed issue ‘New horizons for nanophotonics’.

Tungsten-doped Ge2Sb2Te5 phase change material for high-speed optical switching devices

2020 ◽  
Vol 116 (13) ◽  
pp. 131901
Author(s):  
Pengfei Guo ◽  
Joshua A. Burrow ◽  
Gary A. Sevison ◽  
Heungdong Kwon ◽  
Christopher Perez ◽  
...  
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
High Speed ◽  
Optical Switching ◽  
Optical Switching Devices ◽  
Change Material ◽  
Switching Devices
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