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February 1st, 2008
Riding the Waveguide
Abstract:
Dense wavelength division multiplexing (DWDM) and coarse wavelength division multiplexing (CWDM) are allowing transmission rates on a fiber of up to 440-880 GBps, but controlling this throughput has required similar advances in planar lightwave circuit (PLC) technology. Devices such as arrayed waveguide gratings (AWGs) are able to separate and combine signals—much like the diffraction grating in a spectrometer—for use with DWDM and CWDM systems. Manufacturers are capitalizing on advances in semiconductor fabrication and nanotechnology to build sensitive multiplexing equipment.
Source:
rdmag.com
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