Patent
Network with shared optical sources
Mark Thomas,Michael Munroe +1 more
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TLDR
In this paper, the authors discuss the possibility of sharing optical sources in an optical network, which typically reduces the number of optical sources needed to operate the optical network and thus reduces the cost of the network.Citations
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Low loss WDM add drop node
Magnus Öberg,Ulf A. Persson +1 more
TL;DR: In this article, the authors propose a two-channel add/drop filter (5e1-2, 5w12) for bidirectional WDM traffic between two nodes (A, B) connected in the path of the transmission fiber.
Patent
Dense Wavelength-Division Multiplexing (DWDM) Network and Method
Tiangong Liu,Xiao Andy Shen +1 more
TL;DR: In this paper, a dense wavelength-division multiplexing (DWDM) optical network includes an optical input port configured to receive unmodulated optical signals from the optical fiber comprising wavelength channels, where one or more modulators coupled to the optical input ports are each configured to modulate a respective first wavelength channel of the wavelength channels with respective data to produce a modulated first wavelength channels when the modulator is in a transmit state.
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Wavelength division multiplexing transmission device
TL;DR: In this article, a planarized optical signal of one wavelength comprised in this wavelength division multiplexed light is planarised and non-signal light of the same wavelength is reproduced.
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Optically-switched data network
TL;DR: In this paper, a first node determines that it has communication information to transmit to a second node, and determines if a first subscription signal is present on the optical wavelength bus, and injects an optical communication signal onto the optical data bus.
Patent
(D) WDM communications network using back-up light sources
Thierry Zami,Ludovic Noirie +1 more
TL;DR: In this article, local modulation means (MODs) adapted to modulate light having a selected wavelength delivered by a source (S 1 -S 4 ) to deliver modulated optical signals and coupling means adapted to couple said local modulation mean (MOD) firstly to a first optical fiber portion (PF 1 ) conveying light having selected wavelength from a source belonging to a remote node of said network and secondly to another source delivering light having that selected wavelength.
References
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Patent
WDM optical network with passive pass-through at each node
TL;DR: In this article, the authors proposed a protocol independent optical transmission medium with passive filters at each node for dropping a band associated therewith and passively forwarding other bands through the transmission medium.
Patent
Remodulating channel selectors for WDM optical communication systems
TL;DR: In this article, a remodulating channel selector for a wavelength division multiplexed optical communication system is presented. But the selection of the optical channel is not a trivial task, since the wavelength of the output optical signal can be the same as or different from the optical channels which comprise the input signal.
Patent
Optical communication system and optical transmitting device applied thereto
TL;DR: In this article, the output level of the optical coupler is adjusted with an adjuster to adjust the level of adjustment optical signal with the wavelength lambda i within the output from the optical amplifier.