Mechanism of multisoliton formation and soliton energy quantization in passively mode-locked fiber lasers

Details Mechanism of multisoliton formation and soliton energy quantization in passively mode-locked fiber lasers Mechanism of multisoliton formation and soliton energy quantization in passively mode-locked fiber lasers

2009-10-30

arxiv.org/abs/0910.5810v1

Physics

Optics

Scientific paper

We report results of numerical simulations on the multiple soliton generation and soliton energy quantization in a soliton fiber ring laser passively mode-locked by using the nonlinear polarization rotation technique. We found numerically that the formation of multiple solitons in the laser is caused by a peak power limiting effect of the laser cavity. It is also the same effect that suppresses the soliton pulse collapse, an intrinsic feature of solitons propagating in the gain media, and makes the solitons stable in the laser. Furthermore, we show that the soliton energy quantization observed in the lasers is a natural consequence of the gain competition between the multiple solitons. Enlightened by the numerical result we speculate that the multi-soliton formation and soliton energy quantization observed in other types of soliton fiber lasers could have similar mechanism.

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