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We demonstrate single channel and 4times10-Gb/s WDM system optimization using tunable pulse width management for RZ formatted signals. Varying the pulse width from 50 ps to 10 ps using a phase modulator and a tunable dispersion element at the transmitter can double the transmission distance with a 4% variation in the residual link dispersion
A novel and simple technique for measuring the chirp parameter of optical modulators using optical filtering and phase comparison is demonstrated. Chirp parameters, as well as the signs, of both electro-optic (EO) and electro-absorption (EA) modulators are measured with sensitivity < 0.1 under varying bias conditions.
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