We propose a series method to analyze detuned active mode-locked lasers. Using this method, we can analyze not only
noiseless lasers but also lasers modelled with amplified spontaneous emission (ASE) noise. Moreover, the method also
helps to study the transient evolution of the pulse inside the cavity, which cannot be done using classical analysis.
Dual locking ranges in a harmonic mode-locked fiber laser with a birefringence cavity is reported in this paper.
Experimental results clearly show the existence of two separated locking ranges in the vicinity of the 834th harmonic of
the fundamental frequency. Theoretical explanation is given. Theoretical estimation of the locking range agrees well
with the experimental result. Simulation also reproduces the experimental results.
We report the transmission of 40Gb/s channels over DWDM optically amplified communications systems employing RZ, NRZ, CS-RZ amplitude and differential phase shift keying modulation over 320 km standard SMF and 328 km dispersion compensating modules. Impacts of optical filtering of 10 Gb/s DWDM transmission system on these 40G modulation formats are reported. The mutual impacts of 10 Gb/s and 40 Gb/s co-transmission are proven to be minimum.
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