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Design of a simple flexible multi-wavelength add-drop ROADM using MEMS based tunable wavelength selective filter is presented. This ROADM offers simultaneous tuning over different bands in addition to permanent add-drop channels and is suitable for application as edge-ROADM. The optical signal-to-noise ratio of all the express and add-drop channels of this ROADM is analyzed as a precursor for optimization...
The transmission performance improvement of low-cost conventional directly modulated laser (DML) sources, fabricated for operation at 2.5 Gb/s but modulated at 10 Gb/s is presented and experimentally demonstrated. Performance improvement is achieved by electronic feed-forward and decision-feedback equalization as well as offset optical filtering at the receiver end. Experimental studies consider both...
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