Results 41 to 50 of about 5,004,125 (344)
, 2020 This paper presents an analysis on a hexagonal cladding with a rotated-hexa core in photonic crystal fiber (H-PCF) based optical sensor formation with simultaneously minimal confinement loss and higher sensitivity for chemical sensing functions.
S. Sen, Md. Abdullah-Al-Shafi, A. Kabir
semanticscholar +1 more source
Embedded plasmonic waveguides with Yagi-style antennas [PDF]
, 2012 High confinement in plasmonic waveguides usually comes along with high loss. We present experiments on a new approach, which allows to tune adiabatically between high confinement and low loss waveguides, connected to optical Yagi-style ...
Atwater, Harry A. +5 more
core +1 more source
Comparison of confinement and loss of plasmonic waveguides [PDF]
IEEE Photonics Conference 2012, 2012 We have compared a number of well known plasmonic guides in terms of power confinement, normalized power density, and propagation loss. We have identified the relative advantages and limitations of these guides.
X. Sun +3 more
openaire +1 more source
Two-dimensional optical ring resonators based on radial Bragg resonance [PDF]
, 2003 A Bragg-reflection-based ring resonator is proposed and analyzed. Closed-form expressions for the field and dispersion curves for radial Bragg gratings and photonic bandgap crystals are derived.
Scheuer, Jacob, Yariv, Amnon
core +1 more source
Fabrication and coupling to planar high-Q silica disk microcavities [PDF]
, 2003 Using standard lithographic techniques, we demonstrate fabrication of silica disk microcavities, which exhibit whispering-gallery-type modes having quality factors (Q) in excess of 1 million.
Armani, D. K. +3 more
core +1 more source
Sensing and Bio-Sensing Research, 2017 A micro structure folded cladding porous shaped with circular air hole photonic crystal fiber (FP-PCF) is proposed and numerically investigated in a broader wavelength range from 1.4 µm to 1.64 µm (E+S+C+L+U) for chemical sensing purposes.
Bikash Kumar Paul +3 more
doaj +1 more source
Wave-Shaped Microstructure Cancer Detection Sensor in Terahertz Band: Design and Analysis
Applied Sciences, 2023 For the quick identification of diverse types of cancer/malignant cells in the human body, a new hollow-core optical waveguide based on Photonic Crystal Fiber (PCF) is proposed and numerically studied. The refractive index (RI) differs between normal and
Md Rezaul Hoque Khan +5 more
doaj +1 more source
Non-Hermiticity-induced wave confinement and guiding in loss-gain-loss three-layer systems [PDF]
Physical Review A, 2016 Following up on previous studies on parity-time-symmetric gain-loss bi-layers, and inspired by formal analogies with plasmonic waveguides, we study non-Hermiticity-induced wave confinement and guiding phenomena that can occur in loss-gain-loss three-layers. By revisiting previous well-established "gain-guiding" concepts, we investigate analytically and
Savoia, Silvio +2 more
openaire +2 more sources
Sensing and Bio-Sensing Research, 2016 This paper presents an octagonal photonic crystal fiber (O-PCF) for liquid sensing, in which both core and cladding are microstructured. Some propagation characteristics of proposed structure have been investigated by using the full vectorial finite ...
Kawsar Ahmed, Monir Morshed
doaj +1 more source
Sensing and Bio-Sensing Research, 2019 This paper presents a nonlinear Photonic Crystal Fiber (PCF) based sensor to detect liquid analytes. An extensive analysis has been presented at wide range of wavelength (0.6 μm−1.6 μm) in order to investigate the impact of some design parameters.
Md. Faizul Huq Arif +3 more
semanticscholar +1 more source