Results 61 to 70 of about 31,344 (199)

Extended Worst-Case OSNR Searching Algorithm for Optical Network-on-Chip Using a Semi-Greedy Heuristic With Adaptive Scan Range

open access: yesIEEE Access, 2020
The advances in silicon photonics technology have facilitated the realization of optical network-on-chips (ONoCs) to cope with the physical limitations of metal interconnections in traditional CMOS integrated circuits.
Yong Wook Kim, Jae Hoon Lee, Tae Hee Han
doaj   +1 more source

Performance evaluation of single carrier 40-Gbit/s downstream for long-reach passive optical network [PDF]

open access: yes, 2014
This paper presents a new long reach PON (LR-PON) scenario operating at a single carrier of 40-Gbit/s for downstream, as an upgrade option of the LR-PON evolutionary strategy. An electrical 3-level duobinary modulation format was proposed for the 40-Gbit/
Bauwelinck, Johan   +8 more
core   +1 more source

Performance Analysis of Microwave Photonic Spectral Filters based on Optical Microcombs

open access: yesAdvanced Physics Research, Volume 4, Issue 1, January 2025.
A comprehensive analysis of microcomb‐based microwave spectral filters based on the transversal filter approach is presented. Theoretical limitations in the filter spectral response from finite tap numbers, experimental errors, and the influence of the input signal's bandwidth are all analyzed.
Yang Li   +10 more
wiley   +1 more source

Experimental Evaluation of Impairments in Unrepeatered DP-16QAM Link with Distributed Raman Amplification

open access: yesPhotonics, 2017
The transmission impairments of a Raman amplified link using dual-polarization 16-quadrature amplitude modulation (DP-16QAM) are experimentally characterized.
Xiaodan Pang   +6 more
doaj   +1 more source

Modulation Format Identification Based on Signal Constellation Diagrams and Support Vector Machine

open access: yesPhotonics, 2022
In coherent optical communication systems, where multiple modulation formats are mixed and variable, the correct identification of signal modulation formats provides the foundation for subsequent performance improvement using digital algorithms.
Zhiqi Huang   +11 more
doaj   +1 more source

Simultaneous multi-impairment monitoring of 640 Gb/s signals using photonic chip based RF spectrum analyzer

open access: yes, 2015
We report the first demonstration of simultaneous multiimpairment monitoring at ultrahigh bitrates using a THz bandwidth photonic-chip-based radio-frequency (RF) spectrum analyzer.
Bulla, Douglas   +8 more
core   +1 more source

Distributed remote antenna unit with selection‐based of (RoF‐IoT) paradigm: Performance improvement

open access: yesIET Communications, Volume 19, Issue 1, January/December 2025.
Abstract Mixing the wireless medium with fiber optics can form a new communication system called a radio‐over‐fiber (RoF) network; it is a promising solution that can provide high bandwidth and a reliable connection between numerous sensors in wireless sensor networks (WSN) and the central office (base station) within a particular area.
Shakir Salman Ahmad   +2 more
wiley   +1 more source

Opportunities, challenges and requirements for introducing space division multiplexing in fibre optical networks

open access: yesIET Optoelectronics, Volume 19, Issue 1, January/December 2025.
The authors discuss opportunities, challenges and requirements for successful commercialisation of space division multiplexing (SDM) in optical networks. The authors consider recent developments in SDM technology and focus on the importance of different geometrical parameters when designing multi‐core fibres and on the design choices for shared SDM ...
Gabriele Di Rosa, Lutz Rapp
wiley   +1 more source

Optical signal to noise ratio monitoring using single channel sampling technique.

open access: yesOptics Express, 2014
In this paper, we propose a novel method to depict 2-dimension (2-D) phase portrait by using single-channel-sampling (SCS) technique, which can be used for optical performance monitoring.
Yi Yu, Banghong Zhang, Changyuan Yu
semanticscholar   +1 more source

Applied constant gain amplification in circulating loop experiments [PDF]

open access: yes, 2009
The reconfiguration of channel or wavelength routes in optically transparent mesh networks can lead to deviations in channel power that may impact transmission performance.
Barry, Liam P.   +3 more
core   +1 more source

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