Picosecond soliton transmission using concatenated nonlinear optical loop-mirror intensity filters

Smith, N J and Doran, Nick (1995). Picosecond soliton transmission using concatenated nonlinear optical loop-mirror intensity filters. Journal of the Optical Society of America B, 12 (6), pp. 1117-1125.


The issues involved in employing nonlinear optical loop mirrors (NOLMs) as intensity filters in picosecond soliton transmission were examined in detail. It was shown that inserting NOLMs into a periodically amplified transmission line allowed picosecond solitons to be transmitted under conditions considered infeasible until now. The loop mirrors gave dual function, removing low-power background dispersive waves through saturable absorption and applying a negative feedback mechanism to control the amplitude of the solitons. The stochastic characteristics of the pulses that were due to amplifier spontaneous-emission noise were investigated, and a number of new properties were determined. In addition, the mutual interaction between pulses was also significantly different from that observed for longer-duration solitons. The impact of Raman scattering in the computations was included and it was shown that soliton self-frequency shifts may be eliminated by appropriate bandwidth restrictions.

Divisions: Engineering & Applied Sciences > Electrical, electronic & power engineering
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Uncontrolled Keywords: nonlinear optical loop mirror,saturable absorbers,picosecond soliton transmission systems,optical amplifier,self-frequency shift,bandwidth filtering
Published Date: 1995-06


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