Results 51 to 60 of about 92,601 (341)
Diffractive optics approach towards subwavelength pixels
, 2018 Pixel size in cameras and other refractive imaging devices is typically limited by the free-space diffraction. However, a vast majority of semiconductor-based detectors are based on materials with substantially high refractive index.
Fan, Bo +2 more
core +1 more source
Ultrasensitive twin-core photonic bandgap fiber refractive index sensor [PDF]
, 2009 We propose a microfluidic refractive index sensor based on new polymer twin-core photonic bandgap fiber (PBGF). The sensor can achieve ultrahigh detection limit, i.e.
Bang, Ole, Town, Graham, Yuan, Scott Wu
core +1 more source
Microring resonator refractive index sensor with integrated spectrometer [PDF]
, 2015 We present a SOI ring based sensor read-out system. The novelty of the architecture lies in the capability to sense the shifts of multiple peaks simultaneously with an integrated AWG ...
Bogaerts, Wim +2 more
core +2 more sources
Refractive Index Sensing by Using Mechanically Induced Long-Period Grating
IEEE Photonics Journal, 2012 In this paper, a refractive index sensor using a mechanically induced long-period grating is proposed and experimentally demonstrated. The sensing element is based on a composite optical waveguide, which is made of a single-mode fiber, a Teflon-cannula ...
Xiaojun Zhou +3 more
doaj +1 more source
Sensitivity Enhancement of a Concave Shaped Optical Fiber Refractive Index Sensor Covered with Multiple Au Nanowires [PDF]
, 2019 In the present paper, a new kind of concave shaped refractive index sensor (CSRIS) exploiting localized surface plasmon resonance (LSPR) is proposed and numerically optimized.
Kumari, S. +3 more
core +1 more source
Beilstein Journal of Nanotechnology, 2016 In this paper we report the design and experimental realisation of a novel refractive index sensor based on coupling between three nanoscale stripe waveguides. The sensor is highly compact and designed to operate at a single wavelength.
Chamanei Perera +5 more
doaj +1 more source
Nanofluidic Refractive-Index Sensors Formed by Nanocavity Resonators in Metals without Plasmons
Sensors, 2011 Nanocavity resonators in metals acting as nanofluidic refractive-index sensors were analyzed theoretically. With the illumination of transverse electric polarized light, the proposed refractive index sensor structure acts as a pure electromagnetic ...
Shih-Pin Tsai +3 more
doaj +1 more source
, 2012 We present a metamaterial-based terahertz (THz) sensor for thickness measurements of subwavelength-thin materials and refractometry of liquids and liquid mixtures.
Beigang, René +5 more
core +1 more source
Plasmon Interferometers for High-Throughput Sensing [PDF]
, 2012 Cataloged from PDF version of article.In this letter, we demonstrate a refractive index sensor based on a subwavelength plasmon interferometer. Illumination of an atilt subwavelength slit-grove pair on a metal surface with monochromatic light generates ...
Kocabas, C., Yavas, O.
core +1 more source
Lessons Learned: Quality Analysis of Optical Coherence Tomography in Neuromyelitis Optica
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Introduction Optical coherence tomography (OCT)‐derived retina measurements are markers for neuroaxonal visual pathway status. High‐quality OCT scans are essential for reliable measurements, but their acquisition is particularly challenging in eyes with severe visual impairment, as often observed in neuromyelitis optica spectrum disorders ...
Hadi Salih +40 more
wiley +1 more source