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Wave Division Multiplexing (WDM)

La tecnologia Wavelength-division multiplexing (WDM) consente il trasporto di molteplici segnali ottici su una singola fibra, mediante lunghezze d’onda differenti di luce laser.

Essenzialmente, rende possibile ampliare la capacità della rete senza il bisogno di fibre supplementari o di revisionare la rete di dorsale.

I sistemi WDM si suddividono in diversi pattern di lunghezze d'onda - Coarse WDM (CWDM) e Dense WDM (DWDM).

Dense Wave Division Multiplexing (DWDM)

DWDM utilizza la tecnologia laser raffreddata e può essere amplificato per ampliare così le distanze di trasmissione.

Poiché DWDM offre superiore capacità massima, tende a essere usato a un livello più alto di CWDM all’interno della gerarchia delle comunicazioni.

Coarse Wave Division Multiplexing (CWDM)

CWDM è una tecnologia robusta, usata di norma per le Metropolitan Area Networks o WAN, su distanze fino a 120 km.

La creazione di ricetrasmettitori GBIC e small form factor pluggable (SFP) che utilizzano lunghezze d’onda CWDM standardizzate consente un potenziamento pressoché ininterrotto, anche in sistemi legacy che supportano interfacce GBIC/SFP.

Ulteriori lunghezze d'onda/capacità possono essere facilmente aggiunte introducendo nuove lunghezze d’onda, senza portare a interferenze o interruzioni del traffico sulla rete.

Normalmente l'ottimizzazione dei costi e il miglior rendimento e la capacità della rete, grazie a sistemi CWDM flessibili e a prova di futuro, consentono di ammortizzare l’investimento in pochi mesi – i costi di gestione per il leasing delle fibre sono ridotti dell'80%.

SAN Connectivity

The ever increasing data storage requirements mean an increase in 4 Gb/s fibre channel capacity to boost performance of Storage Area Networks (SANs). Optical transceivers provide the interface between fibre channel systems and the optical fibres of the SAN. More »

Active WDM

The T series offers solutions for transport storage, data, voice and video applications over WDM networks. A pay as you grow platform for reducing network complexity and spare part holding. More »

Passive WDM

The heart of the unit, the WDM passively (no power requirement) combines and separates the specific wavelengths on one remote fibre. A comprehensive range of filters allowing users to increase the capacity of fibre. More »

Attenuators

An attenuator is a device that reduces the amplitude or power of a transmission without appreciably distorting its waveform, effectively the opposite of an amplifier. More »

SFP/GBIC Transceivers

Optical transceivers such as GBICs and SFPs available in CWDM, Xenpaks, XFPs and X2s available in DWDM. More »

10 Gig Transceivers

High capacity transceivers must meet the criteria for CWDM and DWDM. The modules are hot pluggable and digital diagnostic functions are available enabling optical power level monitoring and advanced alarm settings. More »

Economics of CWDM in 4G Fibre Channel Environments

Coarse Wavelength Division Multiplexing (CWDM) is an established optical transport technology for extending transmission distances. More »

Embedded CWDM in the Brocade Silkworm 4Gbps Family

This Whitepaper describes a joint SAN Extension Solution based on Brocade Silkworm Switches and SmartOptics 4 Gb/s CWDM SFP transceivers. More »

Gigabit Ethernet and Fibre Channel WDM Networking

This Whitepaper describes a SAN and LAN Extension Solution based on embedded WDM SFP transceivers from SmartOptics. More »

WDM Technology

This Whitepaper describes Wavelength Division Multiplexing (WDM) Technology. More »

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