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CWDM
(redirected from Coarse WDM)

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CWDM
(Course WDM) An optical transmission method that is used for shorter distances than dense WDM (DWDM). Also known as "wide WDM," CWDM transmits fewer channels and uses wider spacing between the channels for distances up to 60 km. Wider spacing up to 25 nm, compared to 1.6nm and smaller for DWDM, tolerates more temperature fluctuation.

Standardized by the IEEE in 2004 for 10 Gigabit Ethernet, CWDM components are much less costly than DWDM because the laser does not have to be stabilized, and an external modulator is not required. The laser can be modulated directly by changing the drive current. CWDM operates between 1265 and 1625 nm compared to DWDM's tighter 1530-1620 range. See WDM.
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Wavelength spacing of extra than 20 nm is generally called coarse WDM (CWDM).
Next generation optical access network using CWDM technology by Rubaye, Saba Al-; Dulaimi, Anwer Al-; Raweshidy, Hamed / International Journal of Communications, Network and Systems Sciences (IJCNS)
Nasdaq:MRVC), a provider of high-bandwidth, Ethernet Access solutions, have announced that at SuperComm 2002, both companies will demonstrate commercialization of 1400 nm equipment, using MRV's 16-channel Coarse WDM (CWDM), Lambda Driver WDM system and OFS' AllWave fiber.
OFS AND MRV DEMO 1400 NM TRANSMISSION OVER ZERO WATER PEAK FIBER AT ... by EDP Weekly's IT Monitor
WDM: Principles of Wavelength Division Multiplexing (WDM) components of a WDM system bi-directional operation using WDM description and comparison of wideband WDM, narrowband WDM, Coarse WDM (CWDM) and Dense WDM (DWDM) comparison of the different methods of increasing the capacity of existing systems causes and effects of optical impairments including chromatic dispersion and optical non-linearity use of Dispersion Shifted fibre and dispersion compensation optical safety of WDM systems.
Understand the Principles and Capabilities of Optical Line Systems by Business Wire
 
 
 
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