Results 41 to 50 of about 44,400 (366)

Comparison of plant proximal sensing approaches for nitrogen supply detection in crops

open access: yesAgronomy Journal, Volume 114, Issue 6, Page 3317-3328, November/December 2022., 2022
Abstract Nondestructive proximal sensors can be an efficient source of information of N status in crops for localized and rapid adjustment of fertilization applications. The aim of this study was to compare two transmittance/reflectance‐based sensors (SPAD, ASD) and a florescence‐based sensor (Multiplex) in their ability to measure N content in corn ...
Pablo Rosso   +3 more
wiley   +1 more source

Development of three level code division multiplexing over wavelength division multiplexing [PDF]

open access: yes, 2014
In this research, the Three Level Code Division Multiplexing (TLCDM) over Wavelength Division Multiplexing (WDM) is investigated in optical fiber communication system.
Khosravi, Faranak   +2 more
core   +1 more source

Phase-coherent lightwave communications with frequency combs [PDF]

open access: yes, 2019
Fiber-optical networks are a crucial telecommunication infrastructure in society. Wavelength division multiplexing allows for transmitting parallel data streams over the fiber bandwidth, and coherent detection enables the use of sophisticated modulation ...
Andrekson, Peter A.   +7 more
core   +2 more sources

Ultra-Broadband Mode Converter and Multiplexer Based on Sub-Wavelength Structures

open access: yesIEEE Photonics Journal, 2018
Current bandwidth capacity provided by wavelength-division multiplexing and polarization-division multiplexing is insufficient to keep up with the increasing bandwidth demand required for new services.
David Gonzalez-Andrade   +7 more
doaj   +1 more source

Angled multimode interferometer for bidirectional wavelength division (de)multiplexing [PDF]

open access: yesRoyal Society Open Science, 2015
We have demonstrated a bidirectional wavelength division (de)multiplexer (WDM) on the silicon-on-insulator platform using two 4-channel angled multimode interferometers (AMMIs) sharing the same multimode interference waveguide.
Y. Hu   +8 more
doaj   +1 more source

Quantum Metropolitan Optical Network based on Wavelength Division Multiplexing [PDF]

open access: yes, 2013
Quantum Key Distribution (QKD) is maturing quickly. However, the current approaches to its application in optical networks make it an expensive technology.
Ciurana, Alex   +6 more
core   +4 more sources

Neuromorphic computing using wavelength-division multiplexing

open access: yes, 2022
Optical neural networks (ONNs), or optical neuromorphic hardware accelerators, have the potential to dramatically enhance the computing power and energy efficiency of mainstream electronic processors, due to their ultralarge bandwidths of up to 10s of ...
Han, Weiwei   +9 more
core   +1 more source

Design of time division multiplexing/wavelength division multiplexing passive optical network system for high-capacity network [PDF]

open access: yes, 2023
This paper presents the design of time division multiplexing-wavelength division multiplexing-passive optical network (TDM-WDM PON). In this design, the current TDM PON is incorporated with the proposed WDM-PON in order to design a high-capacity network ...
Azmi, Farid Hazwan   +4 more
core   +2 more sources

Gain Characteristics of Few-Mode EDFA With Different Pump

open access: yesIEEE Photonics Journal, 2022
Few-mode erbium-doped fiber amplifier (FM-EDFA) is a key device to achieve power compensation in long-haul mode division multiplexing (MDM) optical system.
Wenxuan Xu   +7 more
doaj   +1 more source

A wide-band perfect light absorber at mid-wave infrared using multiplexed metal structures [PDF]

open access: yes, 2012
We experimentally demonstrate a wide band near perfect light absorber in the mid-wave infrared region using multiplexed plasmonic metal structures. The wide band near perfect light absorber is made of two different size gold metal squares multiplexed on a thin dielectric spacing layer on the top of a thick metal layer in each unit cell.
arxiv   +1 more source

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