Double Fiber Passive

DWDM

Double Fiber DWDM mux (passive filters) product line is part of our xWDM product line uses up to C-Band (Common Band) optical channel plan as defined by ITU-T G.694.1. It allows organize up to 40 parallel and independent data streams over pair of single-mode optical fibers if using 100 GHz channel spacing, or up to 80 data streams, if using 50 GHz channel spacing. As DWDM channel plan partly overlaps with passband of CWDM channels 1531 nm and 1551nm, it’s also possible to form Hybrid-WDM solution and upgrade existing passive CWDM connections, where capacity reached maximum. xWDM technology remains as todays prevailing technology for extending black fiber capacity. Main advantages of xWDM technology are its passive nature – no power supply or cooling necessary, robustness – no special microclimate requirements and as passive element, it has MTBF 100+ Years. xWDM – it is fully data rate or line protocol neutral – it is possible to use with colored transceivers supporting such applications as 1G/10G Ethernet, SDH/SONET and 8/4/2/1G Fiber Channel. It is simple to install, requires no configuration or maintenance. We designed Double Fiber DWDM mux product line focusing on minimizing insertion loss allowing to extend maximum reach of DWDM technology, logical structure allowing to minimize initial investments and support gradual growth of DWDM capacity.

Double Fiber DWDM mux

For 50GHz Channel Plan:

For maximizing double fiber DWDM connection capacity, it’s possible to use 50 GHz spacing C-Band channel plan. With our products You can achieve 40+40=80 independent and parallel connections over pair of single-mode fiber. As first You can implement 40 even channels and later upgrade with second mux, supporting 40 odd channels:

For Maximum Capacity (100 GHz):

For maximum double fiber DWDM connection capacity in case of using 100 GHz spacing C-Band channel plan, use our 40 channels or 32 channels mux products, depending on capacity need and link budget:

For Granular Expansion:

In cases of limited link budget or need of granular investment, use our 16-channel product line or 8-channel product line. With both approaches is possible to achieve 32 parallel data streams, but 16-channel approach will have smaller insertion loss:

For Hybrid-WDM Solution:

As DWDM channel plan partly overlaps with passband of CWDM channels 1531 nm and 1551nm, it’s also possible to form Hybrid-WDM solution and upgrade existing passive CWDM connections, where capacity reached maximum. Our mux products are compatible with each of overlapping CWDM channels:

For Adding/Dropping channels:

For adding/dropping DWDM channels across sites, we categorize our OADM product line in two groups. Line termination units we use in case, when dropped channels need to be interfacing towards only one side (east or west) of link. OADM units we use when dropped channels are interfacing both sides (east and west) of DWDM Double Fiber link:

Accessories:

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