December 2011
Effect of chromatic dispersion on four-wave mixing in WDM optical transmission system
Crosstalk due to four-wave mixing (FWM) is the dominant nonlinear effect in long-haul multi-channel optical communication systems which can severely limit system performance. In this paper, we have simulated the effect of chromatic dispersion on FWM using equal and unequal channel spacing in terms of input/output spectrum, eye diagram and bit error rate. Results show that the effect of FWM reduces with...
December 2011
Reflective teaching pedagogy as innovative approach in teacher education through open and distance learning
The reflective teaching methodology involves questioning oneself to bring perfection by asking the following questions: Which teaching model am I using? How does it apply in specific teaching situations? How well is it working? Teacher educator should apply this theory in classroom practice, in order observe and reflects on the results so that the classroom becomes a kind of laboratory where the...
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