نتایج جستجو برای: gap waveguide

تعداد نتایج: 156671  

2007
Sanshui Xiao Niels Asger Mortensen

Optofluidic sensors based on highly dispersive two-dimensional photonic crystal waveguides are theoretically studied. Results show that these structures are strongly sensitive to the refractive index of the infiltrated liquid(nl), which is used to tune dispersion of the photonic crystal waveguide. Waveguide mode-gap edge shifts about 1.2 nm for δnl=0.002. The shifts can be explained well by ban...

Journal: :Optics express 2007
F Riboli P Bettotti L Pavesi

We investigate the photonic properties of one dimensional photonic crystals realized on Silicon On Insulator channel slot-waveguide to engineer slow light effects. Various geometries of the photonic pattern have been characterized and their photonic band-gap structure analyzed. The optimal geometry has been further used to realize a coupled resonator optical waveguide (CROW). A first optimizati...

2015
Peng Shi Guangya Zhou Jie deng Feng Tian Fook Siong Chau

We report the observations of all-optical electromagnetically induced transparency in nanostructures using waveguide side-coupled with photonic crystal nanobeam cavities, which has measured linewidths much narrower than individual resonances. The quality factor of transparency resonance can be 30 times larger than those of measured individual resonances. When the gap between cavity and waveguid...

Journal: :IEEE Transactions on Components, Packaging and Manufacturing Technology 2018

Journal: :Optics express 2014
Nicole Thomas Russell J Barbour Yuncheng Song Minjoo Larry Lee Kai-Mei C Fu

Large-scale entanglement of nitrogen-vacancy (NV) centers in diamond will require integration of NV centers with optical networks. Toward this goal, we present the fabrication of single-crystalline gallium phosphide (GaP) resonator-waveguide coupled structures on diamond. We demonstrate coupling between 1 μm diameter GaP disk resonators and waveguides with a loaded Q factor of 3,800, and evalua...

Journal: :Optics express 2008
Daohong Song Cibo Lou Liqin Tang Xiaosheng Wang Wei Li Xingyu Chen Kody J H Law Hadi Susanto P G Kevrekidis Jingjun Xu Zhigang Chen

We demonstrate the self-trapping of single- and double-charged optical vortices in waveguide lattices induced with a self-defocusing nonlinearity. Under appropriate conditions, a donut-shaped single-charged vortex evolves into a stable discrete gap vortex soliton, but a double-charged vortex turns into a self-trapped quadrupole-like structure. Spectrum measurement and numerical analysis suggest...

Journal: :Optics letters 2016
Yaroslav V Kartashov Dmitry V Skryabin

We predict that strong coupling between waveguide photons and excitons of quantum well embedded into waveguide results in the formation of hybrid-dark and antidark light-matter solitons. Such temporal solitons exist due to interplay between repulsive excitonic nonlinearity and giant group-velocity dispersion arising in the vicinity of excitonic resonance. Such fully conservative states do not r...

2002
Ken Suto Takao Saito Tomoyuki Kimura Jun-Ichi Nishizawa Tadao Tanabe

Semiconductor Raman amplifiers are useful for frequency selection in terahertz bandwidth and wavelength division multiplexing (WDM) systems with terabit capacity, as well as direct terabit optical communication systems. We have developed GaP–AlGaP Raman waveguides with micrometer-size cross sections. We have reduced residual optical loss of the waveguide by improvement of the fabrication proces...

2012
A. El Amili C. I. Westbrook Charles Fabry

We give a theoretical treatment of single atom detection in an compound, optical micro cavity. The cavity consists of a single mode semiconductor waveguide with a gap to allow atoms to interact with the optical field in the cavity. Optical losses, both in the semiconductor and induced by the gap are considered and we give an estimate of the cavity finesse. We also compute the cooperativity para...

2011
I. O. Girka V. O. Girka I. V. Pavlenko V. N. Karazin

The excitation of ion azimuthal surface oscillations with extraordinary polarization by light ion beam is studied analytically. Beam-plasma system consists of a cylindrical metal waveguide filled partially by cold magnetized plasma and light ion flow rotating around the plasma column. Dependencies of the beam instability growth rate on the system parameters (plasma and beam densities, value of ...

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