Dense Wavelength Division Multiplexing (DWDM) and Fiber Optic Technology.

enceinte Wavelength Division Multiplexing

The increased demands on roughage optic networks toward the discontinue of the twentieth century spurred a concern of fiber exhaust. The gritstone communications companies such as AT&T, Sprint, and WorldCom, sought-after(a) an economical alternative to installing new fiber which resulted in the emergence of a new transmission technology called Dense Wavelength Division Multiplexing (DWDM). The development of this new technology enabled companies to meet the large capacity demands placed on existing networks by change magnitude data throughput from 2 Gbps to 40 Gbps and increasable to 200Gbps. This provides a widely climbable solution to companies seeking to alleviate their nearly exhausted fiber networks.

The information services that have permeated our society have begin a product that we take for granted. The need for high approachability and faster network response times has pushed the telecommunications backbone to its limits. As seen in Figure A, the internet did not become precise popular until mid-1999. These companies chose to implement high capacity SONET networks to alleviate their bandwidth limitations. By using Time Division Multiplexing (TDM), the SONET technology of that time allowed for the broadcast of data at bit rates of 2.5 Gbps. Unfortunately, they were unable to visualize the immense augmentation in the data conveyancing rate in the future (refer to Figure A).



While improvements on SONET allowed for the theoretical transfer of 10 Gbps over single-mode fiber, it was 16 times more apt(predicate) to be bear on by chromatic dispersion than at 2.5Gbps. In addition, these higher bit-rates required transmission power which affected the waveform quality. It was at this time, long haul providers realized that their on-line(prenominal) TDM system proved to be too expensive and inefficient for national and worldwide (long-haul) data transfers.

Another problem that these backbone providers face was the emergence of competing carriers. These carriers...

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