Did you know the L band is the second-lowest attenuation band in optical fiber?
The first—and most commonly used—is the C band.
But recently, network designers are combining C and L bands to boost DWDM link capacity.
Why?
Because by leveraging both bands, the total number of DWDM channels can reach up to 192, significantly increasing data throughput.
The trade-off?
DWDM equipment must be designed to support both bands, which increases system complexity and cost—especially for circuit packs.
Curious about the differences between C band, Super C, Extended C, and L band?
Check out the detailed post on my page!
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