Results 31 to 40 of about 2,119 (199)
IEEE Access, 2021 Network reliability is very important for the next generation of optical networks. In this paper, a highly reliable protection mechanism, which integrates the approaches of optical protection and microwave protection, is proposed for metro-access optical
Zerui Song +5 more
doaj +1 more source
Environmental Microbiology, Volume 22, Issue 6, Page 2312-2328, June 2020., 2020 Summary Upon competence‐inducing nutrient‐limited conditions, only part of the Bacillus subtilis population becomes competent. Here, we separated the two subpopulations by fluorescence‐assisted cell sorting (FACS). Using RNA‐seq, we confirmed the previously described ComK regulon.
Mirjam Boonstra +12 more
wiley +1 more source
A Problem Analysis of RSOA-Based Optical Access
Elektronika ir Elektrotechnika, 2016 Using WDM multiplexing is one of the ways to increase PON bandwidth. But as WDM-PON is still expensive and difficult administered, the idea of using a Reflective Semiconductor Optical Amplifier (RSOA) is proposed. It can be installed in WDM-PON ONU network devices.
Tervydis, Paulius, Jankuniene, Ruta
openaire +3 more sources
PCOI: Packet Classification‐Based Optical Interconnect for Data Centre Networks
Mathematical Problems in Engineering, Volume 2020, Issue 1, 2020., 2020 To support cloud services, Data Centre Networks (DCNs) are constructed to have many servers and network devices, thus increasing the routing complexity and energy consumption of the DCN. The introduction of optical technology in DCNs gives several benefits related to routing control and energy efficiency.
Rab Nawaz Jadoon +5 more
wiley +1 more source
Coherent ONU based on 850 µm-long cavity-RSOA for next-generation ultra-dense access network [PDF]
, 2016 In this Letter, an efficient bidirectional differential phase-shift keying (DPSK)-DPSK transmission for a ultradense wavelength division-multiplexed passive optical network is proposed. A single distributed feedback laser at the optical network unit (ONU)
Cano Valadez, Iván Nicolás +4 more
core +2 more sources
UDWDM-PON using low-cost coherent transceivers with limited tunability and heuristic DWA [PDF]
, 2016 A new Passive Optical Network (PON) for access, making use of Ultra Dense Wavelength Division Multiplexing (UDWDM) by densely spacing channels at few GHz, and introducing the “wavelength-to-the-user” concept, is proposed.
Polo Querol, Víctor +4 more
core +2 more sources
Chirp-based direct phase modulation of VCSELs for cost-effective transceivers [PDF]
, 2017 A 2.5Gb/s DPSK transmitter based on direct phase modulation of a VCSEL using its own chirp is proposed. The VCSEL, which wavelength is 1539.84nm, has been characterized both static and dynamically.
Altabas, Jose Antonio +3 more
core +2 more sources
A Reconfigurable High-Order UWB Signal Generation Scheme Using RSOA-MZI Structure
IEEE Photonics Journal, 2014 We propose and experimentally demonstrate a reflective semiconductor optical amplifier (RSOA)-based Mach-Zehnder interferometer structure for generating high-order ultrawideband (UWB) signals. First, low-order UWB signals are generated by controlling the
Hanlin Feng +7 more
doaj +1 more source
IEEE Photonics Journal, 2015 We proposed and experimentally demonstrated a wavelength-space division multiplexing (WSDM) optical access network architecture with centralized optical carrier delivery utilizing multicore fibers (MCFs) and adaptive modulation based on reflective ...
Zhenhua Feng +15 more
doaj +1 more source
Applied Sciences, 2017 We present a comparative study of the capacity increase brought by bit- and power-loading discrete multi-tone (DMT) modulation for low-cost colorless transmitters.
Simon Arega Gebrewold +4 more
doaj +1 more source