Coarse Wavelength-Division Multiplexing
Coarse wavelength-division multiplexing (CWDM) systems are suited for the short-haul transport of data, voice, video, storage, and multimedia services. CWDM systems are ideally suited for fiber infrastructures with fiber spans that are 50 km or less and that don't need signal regeneration or the presence of optical amplifiers. The WDM laser bit rate directly determines the capacity of the wavelength and is responsible for converting the incoming electrical data signal into a wavelength.
CWDM systems use lasers that have a bit rate of up to 2.5 Gbps (OC-48/STM-16) and can multiplex up to 18 wavelengths. This provides a maximum of 45 Gbps over a single fiber. The transmitting laser and receiving detector ...
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