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Watch - 5 Steps to DWDM
Single fiber solutions save half of the fiber resources needed for DWDM transport. This has a large economic impact on carriers, dark fiber providers and enterprises. In cases where there are expenses of renting fiber, taxes applied on lighting fiber or even scarce fiber resources, the single fiber solution is very effective.
Using single fiber application and separating enterprise traffic over two single fibers, rather than using dual fiber, increases reliability as one fiber is used for working and the other fiber is used for protecting.
PacketLight single fiber solution is applicable for 100G/200G and 400G wavelengths, can be used over amplified links, and for high capacity applications.
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DWDM Single Fiber Solution
Traditional optical networking data transport calls for two fibers: one for transmitting the signal and the other for receiving the signal. Single fiber solution is more efficient and economical for many applications and scenarios and provides the same performance and throughput.
PacketLight’s DWDM single fiber solution enables customers to utilize single fiber for both transmitting and receiving, significantly maximizing their investment and reducing costs such as monthly leasing, taxes, or laying additional fibers.
The solution is transparent to the client optical interface and suits 100GbE, 10GbE, and interfaces up to 10GbE with any client interface mix. It incorporates a single mux with 8 or 16 channels. Half of the mux is used for transmitting and half for receiving (illustrated in Figure 1).
88 Wavelength DWDM Single Fiber Solution
The 88 wavelength single fiber solution allows extremely high utilization of a single fiber to transport up to 44 client interfaces by mapping them into 88 different wavelengths, transmitting in both directions simultaneously.
The wavelengths transmitting over the dark fiber are split into two spectral bands by using bandpass splitters at both ends of the dark fiber, which are then connected to two muxes, each operating on a different spectral band (see Figure 2).
The mux output is connected to PacketLight’s active transponders and muxponders which provide the 3R (retiming, reshaping and regeneration) functionality, performance monitoring, management, Layer-1 encryption and other optical layer diagnostic capabilities.
44 Wavelength DWDM Single Fiber Solution with Optical Amplifier
Solution for high attenuation links and long haul networks which require high optical budget. PacketLight single fiber solution is embedded with an Erbium-doped fiber amplifier (EDFA). The PL-1000IL device is connected between the bandpass splitters and the mux on each side, and amplifies the relevant spectrum at each end (see Figure 3).
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