Ma Pengfei, Wang Xiaolin, Ma Yanxing, Zhou Pu, Liu Zejin
Opt Express. 2014 Jun 30;22(13):16538-51. doi: 10.1364/OE.22.016538.
In this manuscript, the multi-wavelength active coherent polarization beam combining (CPBC) system is investigated theoretically and experimentally. The relationship between the combining efficiency and the optical path difference (OPD), wavelength number, and the spectral density of power of the amplifier chains is analyzed and validated by establishing a two-channel multi-wavelength CPBC system. Further, the relationship between the combining efficiency and the voltage signal of the photo-detector is developed and validated experimentally. Finally, the feasibility of the active CPBC technique with complex spectral structures is verified and as high as 96% combining efficiency is obtained based on all fiber delay lines to compensate the OPD between different channels, which is crucial for further power scaling of the CPBC system. Our theoretical analysis offers a useful approach to estimate the influence of OPDs, wavelength number, and the spectral density of power of the amplifier chains on multi-wavelength active CPBC system.
在本论文中，对多波长有源相干偏振光束合成（CPBC）系统进行了理论和实验研究。通过建立双通道多波长CPBC系统，分析并验证了合成效率与光程差（OPD）、波长数量以及放大器链功率谱密度之间的关系。此外，还推导并通过实验验证了合成效率与光电探测器电压信号之间的关系。最后，验证了具有复杂光谱结构的有源CPBC技术的可行性，基于全光纤延迟线补偿不同通道间的OPD，获得了高达96%的合成效率，这对于CPBC系统进一步的功率扩展至关重要。我们的理论分析为评估OPD、波长数量和放大器链功率谱密度对多波长有源CPBC系统的影响提供了一种有用的方法。
