Results 11 to 20 of about 3,749,755 (245)
Improving multi access interference suppression in optical CDMA by using all-optical signal processing [PDF]
, 2013 This paper presents the study of a novel alloptical method for processing optical CDMA signals towards improving suppression of multi access interference.
Glesk, Ivan +2 more
core +4 more sources
Lomonosov GRB Catalogue: The First Experience of Prompt Emission Multi-Wavelength Observations
Universe, 2021 This paper presents a catalogue of gamma-ray bursts (GRBs) that were detected by the instruments onboard the Lomonosov space observatory. The Lomonosov mission gave the first experience of not only multi-wavelength (from optical to gamma) observations of
V. A. Sadovnichy +13 more
doaj +1 more source
Multi-Wavelength Spatiotemporal Mode-Locked Fiber Laser at 1.55 μm
Photonics, 2022 We propose and demonstrate an effective and simple multi-wavelength spatiotemporal mode-locked (STML) laser. The laser introduces a multimode interference (MMI) effect using the core diameter mismatch of the fibers, thus enabling simultaneous mode ...
Ze-Long Ma +6 more
doaj +1 more source
Performance Analysis of Three-Wavelength Multi-Channel Photonic Crystal Filters of Different Sizes
Crystals, 2022 Multi-wavelength and multi-channel photonic crystal filters are designed with different sizes considered by using a two-dimensional quadric lattice photonic crystal structure to solve the problems of a multi-channel filter with structure complexity ...
Wei Liu, Laisheng Zhang, Fan Zhang
doaj +1 more source
Performance analysis of a 2-D time-wavelength OCDMA wavelength-aware receiver with beat noise [PDF]
, 2006 The effect of beat noise on two-dimensional time-wavelength optical code-division multiple-access systems utilising wavelength-aware receivers is examined. A derivation of a general formula for the bit error probability taking into consideration multiple
Andonovic, I. +2 more
core +4 more sources
Biosensors, 2022 In this paper, we propose a smartphone-based biosensor for detecting human total hemoglobin concentration in vivo with high accuracy. Compared to the existing biosensors used to measure hemoglobin concentration, the smartphone-based sensor utilizes the ...
Zhipeng Fan +4 more
doaj +1 more source
Multi-Wavelength Photopolymerization of Stable Poly(Catecholamines)-DNA Origami Nanostructures [PDF]
, 2021 Orthogonality is pivotal yet chemically challenging in the bottom-up synthesis of multicomponent nanostructures. Here, we leverage the fidelity of the DNA origami technique to install a multi wavelength responsive photopolymerization system with ...
David Y. W., Ng +3 more
core +2 more sources
Research on Multiple Spectral Ranges with Deep Learning for SpO2 Measurement
Sensors, 2022 Oxyhemoglobin saturation by pulse oximetry (SpO2) has always played an important role in the diagnosis of symptoms. Considering that the traditional SpO2 measurement has a certain error due to the number of wavelengths and the algorithm and the wider ...
Chih-Hsiung Shen +2 more
doaj +1 more source
IEEE Photonics Journal, 2022 To track vital signs on the wrist, a wearable system, named WrisTee, has been developed for remote health monitoring. Using three optical sensors with four light sources, WrisTee allows users to measure 12 photoplethysmogram (PPG) signals at three ...
Nguyen Mai Hoang Long, Wan-Young Chung
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Hyperspectral and Radar Airborne Imagery over Controlled Release of Oil at Sea
Sensors, 2017 Remote sensing techniques are commonly used by Oil and Gas companies to monitor hydrocarbon on the ocean surface. The interest lies not only in exploration but also in the monitoring of the maritime environment.
Sébastien Angelliaume +5 more
doaj +1 more source