Sun Telecom wishes all our valued customers and everyone a joyful Christmas and a prosperous year ahead!

Thank you for your continued trust and support. We look forward to strengthening our partnerships and achieving even greater success together in the coming year.

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IDC (Internet Data Center) Fiber Optic Solution

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CWDM VS. DWDM

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Coarse wavelength division multiplexing (CWDM) and dense wavelength division multiplexing (DWDM) are used for increasing the bandwidth of fiber by combining optical signals of different wavelengths on one strand of fiber. This article will discuss the differences between CWDM and DWDM. CWDM and DWDM are both effective solutions to solve the increasing bandwidth capacity of information transmission. But they differ from each other in many aspects. The below parts will discuss some differences between CWDM and DWDM. 1)Channel Spacing The channel spacing is the nominal difference in frequency or wavelength between two adjacent optical channels. CWDM has a wider channel spacing than DWDM. CWDM can transport 18 wavelengths with a channel spacing of 20nm in the spectrum grid from 1470 nm to 1610 nm. On the other hand, DWDM can carry 40, 80, 96, or up to 160 wavelengths with a narrower spacing of 0.8/0.4nm (100 GHz/50 GHz grid). Its wavelengths are from 1525nm to 1565nm (C band) and 15...
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