Results 31 to 40 of about 177,065 (284)
Protection of Passive Optical Networks by Using Ring Topology and Tunable Splitters
International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems, 2013 This article proposes an innovative method for protecting of passive optical networks (PONs), especially the central optical unit – optical line termination (OLT).
Pavel Lafata
doaj +1 more source
Wavelength Division Multiplexing Passive Optical Network modeling Using Optical System Simulator
Al-Khawarizmi Engineering Journal, 2015 Due to the continuing demand for larger bandwidth, the optical transport becoming general in the access network. Using optical fiber technologies, the communications infrastructure becomes powerful, providing very high speeds to transfer a high capacity ...
Nahla Abdulrahman Hussain
doaj +6 more sources
DISCUS: an end-to-end solution for ubiquitous broadband optical access [PDF]
, 2014 Fiber to the premises has promised to increase the capacity in telecommunications access networks for well over 30 years. While it is widely recognized that optical-fiber-based access networks will be a necessity in the short- to medium-term future, its ...
Achouche, Mohand +18 more
core +2 more sources
Heterogeneous Passive Optical Network based on Power over Fiber
Guangtongxin yanjiu, 2022 The increasing demand of mobile network communication bandwidth requires more information in the limited bandwidth. In this paper, a novel bidirectional transmission system architecture based on Radio over Fiber Passive Optical Network (RoF-PON) system ...
Li-wei YANG +5 more
doaj +3 more sources
Combo-PON OLT Transceiver Using Photonic Integration Technology
IEEE Photonics Journal, 2022 In this work, a prototype of 10G Combo-PON OLT transceiver based on photonic integrated circuits (PIC) is proposed and demonstrated. Key optical components for Combo-PON OLT transceiver, including high-power DFB laser, micro-ring modulator and WDM, have ...
Hongqing Ding +8 more
doaj +1 more source
DISCUS: the distributed core for ubiquitous broadband access [PDF]
, 2013 A new end to end architecture based on Long-Reach Passive Optical Network (LR-PON) with wireless integration, a distributed core built of optical transparency islands and an OpenFlow-based control plane, which is being developed in the EU project DISCUS,
Achouche, Mohand +13 more
core
Ultrafast wavelength jumping and wavelength adjustment with low current using monolithically integrated FML for long-reach UDWDM-PON [PDF]
, 2016 Ultrafast wavelength jumping at optical network units (ONUs) for an access network with frequency modulated lasers (FMLs) is demonstrated. This FML consists of an intracavity tunable phase section and filtering gain section. It provides a total of 4.2 nm
Chu, Guang Yong, Prat Gomà, Josep Joan
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Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Background Emerging evidence suggests that low‐frequency neural oscillations are dynamically regulated by consciousness levels, with the recovery of low cortical activity potentially serving as a neurophysiological substrate for conscious emergence. Targeted enhancement of these low‐frequency rhythms in patients with disorders of consciousness
Chuan Xu +10 more
wiley +1 more source
Noise suppression using optimum filtering of OCs generated by a multiport encoder/decoder [PDF]
, 2012 We propose a novel receiver configuration using an extreme narrow band-optical band pass filter (ENB-OBPF) to reduce the multiple access interference (MAI) and beat noises in an optical code division multiplexing (OCDM) transmission.
Cincotti, Gabriella +4 more
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Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To explore how cerebral hypoxia and Normal‐Appearing White Matter (NAWM) integrity affect MS lesion burden and clinical course. Methods Seventy‐nine MS patients, including 13 clinically isolated syndrome (CIS) patients and 66 relapsing–remitting multiple sclerosis (RRMS) patients, and 44 healthy controls (HCs) were recruited from ...
Xinli Wang +8 more
wiley +1 more source