基于VMD和LIA解调的偏差控制方法,该方法是酸偏振控制器的偏振控制器
Applied optics
|September 14, 2023
概括
本研究引入了一种使用变化模式分解 (VMD) 和锁定放大 (LIA) 的新偏差控制方法,以提高酸偏振控制器 (LNPC) 中的偏振控制精度. 这种方法显著减少了光强度波动,提高了LNPC的性能.
科学领域:
- 光子学和光学工程的工程.
- 控制系统工程 控制系统工程
- 材料科学 (酸) 材料科学 (酸)
背景情况:
- 酸极化控制器 (LNPC) 对光学系统至关重要,但由于小的二极电压,其精度降低.
- 现有的偏差控制方法很难精确地管理LNPC的工作点,这会影响整体性能.
- 在保持精度的同时,最大限度地降低 dither 信号的影响是 LNPC 运行的关键挑战.
研究的目的:
- 为LNPCs开发一种先进的偏差控制算法,以提高极化控制的准确性.
- 研究变化模式分解 (VMD) 和锁定放大 (LIA) 在提高LNPC性能方面的有效性.
- 为了弥补LNPC中的半波漂移,并最大限度地减少输出光强度波动.
主要方法:
- 实现一个偏差控制算法,将变化模式分解 (VMD) 用于信号处理和锁定放大 (LIA) 用于信号提取.
- 应用VMD-LIA方法来提取和放大LNPC中的二度信号.
- 利用放大度信号精确补偿LNPC半波漂移.
主要成果:
- VMD-LIA方法成功地提取和放大了二度信号,提高了极化控制的准确性.
- 输出极化光的光强度波动在垂直和水平方向均降低到0.017%以下.
- 建议的偏差控制方法有效地弥补了LNPC半波漂移.
结论:
- 集成VMD和LIA提供了一个强大的解决方案,以提高LNPC的偏振控制精度.
- 这种方法克服了传统方法的局限性,通过有效地管理 dither 和偏差电压.
- 实现的光强度波动的减少证明了开发的偏差控制战略的实际可行性和有效性.
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