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arXiv 1402.3897physics.optics
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多频布里渊振荡器的四波混频锁相

Phase-locking in Multi-Frequency Brillouin Oscillator via Four Wave Mixing

Thomas F. S. Buettner, Irina V. Kabakova, Darren D. Hudson, Ravi Pant, Christopher G. Poulton, Alexander C. Judge, Benjamin J. Eggleton

摘要:

受激布里渊散射(SBS)和克尔非线性四波混频(FWM)是光纤中最重要和最广泛研究的非线性效应之一。在高功率下,SBS可以级联产生由布里渊频移间隔开的多个斯托克斯波。在这里,我们研究复杂的非线性相互作用的级联斯托克斯波,产生在法布里-珀罗硫族化物光纤谐振腔通过SBS和FWM的联合行动。我们证明了存在的参数制度,其中泵和斯托克斯波达到锁相稳态。实时测量的40 ps脉冲与8 GHz的重复率,确认短期和长期的稳定性。数值模拟与实验定性一致,并显示了四波混频在泵浦波和斯托克斯波锁相中的重要作用。我们的研究结果可以应用于设计的新型皮秒脉冲源与GHz的重复频率的光通信系统。

英文摘要:

Stimulated Brillouin scattering (SBS) and Kerr-nonlinear four wave-mixing (FWM) are among the most important and widely studied nonlinear effects in optical fibres. At high powers SBS can be cascaded producing multiple Stokes waves spaced by the Brillouin frequency shift. Here, we investigate the complex nonlinear interaction of the cascade of Stokes waves, generated in a Fabry-Perot chalcogenide fibre resonator through the combined action of SBS and FWM. We demonstrate the existence of parameter regimes, in which pump and Stokes waves attain a phase-locked steady state. Real-time measurements of 40ps pulses with 8GHz repetition rate are presented, confirming short-and long-term stability. Numerical simulations qualitatively agree with experiments and show the significance of FWM in phase-locking of pump and Stokes waves. Our findings can be applied for the design of novel picosecond pulse sources with GHz repetition rate for optical communication systems.

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