Efficient simulation of the swept-waveform polarization dynamics in fiber spools and Fourier domain mode-locked (FDML) lasers
Efficient simulation of the swept-waveform polarization dynamics in fiber spools and Fourier domain mode-locked (FDML) lasers
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DOI：
10.1364/josab.34.001135
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发表时间：
2017-06
影响因子：
1.9
通讯作者：
C. Jirauschek;R. Huber
中科院分区：
文献类型：
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作者：
C. Jirauschek;R. Huber
我们提出了一个理论模型及其有效的数值实现，用于模拟光纤系统（如傅立叶域锁模（FDML）激光器）中波长扫频波形的传播，充分考虑了光纤线轴中的偏振动力学和设置中进一步的偏振相关光学元件。这种方法使我们能够对FDML激光动力学进行超过10万次的长时间模拟，因为某些FDML配置需要确保收敛到稳态工作状态。该模型通过光纤线轴单次传播和固定FDML操作的实验结果进行了验证。对光纤芯、诱导偏振模色散、弯曲双折射和交叉相位调制以及用于偏振补偿的法拉第旋转镜等光学元件的偏振动力学进行了深入的研究。
We present a theoretical model and its efficient numerical implementation for the simulation of wavelength-swept waveform propagation in fiber systems such as Fourier domain mode-locked (FDML) lasers, fully accounting for the polarization dynamics in fiber spools and further polarization-dependent optical components in the setup. This approach enables us to perform long-time simulations of the FDML laser dynamics over more than 100,000 cavity round trips, as required for some FDML configurations to ensure convergence to the steady-state operating regime. The model is validated against experimental results for single propagation through a fiber spool and for stationary FDML operation. The polarization dynamics due to the fiber spool, inducing polarization-mode dispersion, bending birefringence as well as cross-phase modulation, and other optical components such as the Faraday-rotating mirror used for polarization compensation is thoroughly investigated.