Passive WDM Passive CWDM Passive DWDM DWDM Module
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Wavelength Division Multiplexing (WDM) is a way to fully utilise the vast transmission capacity of an optical fibre beyond simply increasing bandwidth. In WDM systems, multiple transmitters, each at a different wavelength, are combined onto a single fibre by a multiplexer (Mux). At the far end, a de-multiplexer (DeMux) separates the wavelengths into separate fibres to separate receivers. In this way, multiple signals ‘share’ the same fibre.
Today’s ‘Dense’ WDM (DWDM) systems use wavelengths which are very closely spaced in the 1550nm range.
DWDM technology provides the best and most economical way to achieve potentially unlimited transmission capacity. As your demands change, you can add more capacity by simply increasing the number of lambdas on the fibre, without the need for expensive upgrades.
Features & Benefits
Low insertion loss Wide pass band High channel isolation High stability and reliability Epoxy free on optical path Applications
Channel add/drop DWDM network Wavelength routing Fibre optical amplifier CATV fibre optic systems Options
Channel spacing
100GHz 200GHz Number of channels
4 channel 8 channel 16 channel 32 channel Packaging options
900μm fibre tails for fusion splicing or connectorisation (medium duty) ABS box construction with 3mm simplex cord tails (heavy duty) Full connectorisation options (SC/PC, SC/APC, FC/PC, FC/APC and LC/PC) Full integration into AFC’s range of enclosure products Passive OADM Optical Add/Drop Multiplexer
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In an optical network, an Optical Add/Drop Multiplexer (OADM) is used to drop one or many wavelengths at a specific site. Wavelengths on the same fibre that are not destined to terminate at other sites pass through the OADM transparently. Traffic that is not terminated is known as ‘express traffic’.
Each wavelength can be at a different bit rate and can be dropped or added without the need to multiplex/de-multiplex.
OADM technology is used to cost-effectively access a small part of the bandwidth in the optical network domain with a minimum amount of electronics.
Features & Benefits
Low insertion loss High isolator Optical path Epoxy free High reliability Applications
Long-haul telecommunicatons Metro and Access networks OXC systems Options
Channel spacing
100GHz 200GHz Number of channels
2 channel 4 channel 8 channel Packaging options
900μm fibre tails for fusion splicing or connectorisation (medium duty) ABS box construction with 3mm simplex cord tails (heavy duty) Full connectorisation options (SC/PC, SC/APC, FC/PC, FC/APC and LC/PC) Full integration into AFC’s range of enclosure products
