Hi am NIVAS i would like to get details on matlab code for dwdm ..My frienD THEJA said matlab code for dwdm will be available here and now i am living at ......... and i last studied in the college/school ......... and now am doing ....i need help on ......etc
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Dense Wavelength Division Multiplexing (DWDM) is an optical multiplexing technology used to increase bandwidth over existing fiber networks. DWDM works by combining and transmitting multiple signals simultaneously to different wavelengths on the same fiber. The technology creates multiple virtual fibers, thus multiplying the capacity of the physical medium.
WDM has revolutionized the cost per transport bit. Thanks to DWDM, fiber networks can carry multiple Terabits of data per second in thousands of miles - at an unimaginable cost less than a decade ago. State - of - the - art DWDM systems support up to 192 wavelengths on a single fiber pair, with each wavelength carrying a capacity of up to 100Gbit / s - 400Gbit / s and a Terabit / s on the horizon.
DWDM provides maximum scalability and reach for fiber networks. Without the capability and reach of DWDM systems, most Web 2.0 and cloud computing solutions would not be feasible. By establishing transport connections as short as tens of kilometers to allow domestic and trans-oceanic transport networks, DWDM is the workhorse of all bit tubes that keep the data highway alive and expanding.
Wavelength division multiplexing (DWDM) originally refers to optical signals multiplexed within the 1550 nm band to take advantage of the capacities (and cost) of erbium doped fiber amplifiers (EDFA), which are effective for lengths Of wavelength between about 1525-1565 nm band), or 1570-1610 nm (band L). The EDFAs were originally developed to replace the SONET / SDH optical-electric-optical re-generators (OEOs), which have made it practically obsolete. EDFAs can amplify any optical signal in its operating range, regardless of the modulated bit rate. In terms of multiple wavelength signals, as long as the EDFA has sufficient pump power available, it can amplify as many optical signals as can be multiplexed in its amplification band (although the signal densities are limited by the choice of modulation format ). Therefore, EDFAs allow a single-channel optical link to be updated at binary rate by replacing only the equipment at the ends of the link, while preserving the existing EDFA or a series of EDFAs over a long path travel. In addition, single wavelength links using EDFAs can be similarly upgraded to WDM links at a reasonable cost. The cost of EDFA is thus utilized through as many channels as can be multiplexed in the 1550 nm band.