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Updated: Jan 11, 2026

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Quasi-light Storage for Optical Data Packets
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通过自适应扩展卡尔曼过增强的相关性检测,对IQ调制器的光学单侧波段调制进行超低偏差自动控制
Optics express
|November 11, 2025
概括
这项研究引入了用于光载载体抑制单侧带 (OCS-SSB) 调制的超低度自动偏差控制方案. 这种新的方法提高了智商调节器的抑制比和稳定性,最大限度地减少了扭曲和干扰.
科学领域:
- 光子学和光学通信技术
- 信号处理 信号处理
- 控制系统工程 控制系统工程
背景情况:
- 光载体抑制单侧带 (OCS-SSB) 调制对于高容量光通信系统至关重要.
- 传统的自动偏差控制 (ABC) 方案在平衡精度,复杂性和信号扭曲方面面临挑战.
- 尽量减少二度信号振幅对于减少干扰和提高OCS-SSB调制中的抑制比率至关重要.
研究的目的:
- 为IQ调制器中OCS-SSB调制提出和验证一个超低偏差自动控制 (ABC) 方案.
- 为了提高光载波抑制比率 (OCSR) 和光侧带抑制比率 (OSSR),同时保持低系统复杂性.
- 为了证明该方案的稳定性,长期稳定性和实现定向侧带抑制的能力.
主要方法:
- 实施一种使用自适应扩展卡尔曼过 (AEKF) 的增强相关性检测 (CD) 技术.
- 将二度信号振幅降低到半波电压 (Vπ) 的0.6%,明显低于常规水平.
- 基于AEKF的ABC方案在20 GHz无线电频率的性能实验验证.
主要成果:
- 通过减少dither振幅,实现了OCSR的12.90dB增加,有效地抑制了dither干扰.
- 实现了高精度稳定,平均OCSR为23.61 ± 0.18 dB,OSSR为24.12 ± 0.26 dB.
- 经过证明,峰值到峰值的波动减少超过10dB,长期稳定性超过9小时,以及对环境干扰的稳定性. 实现了±1级侧带的方向抑制.
结论:
- 拟议的超低度ABC方案有效地减轻了偏差控制精度和OCS-SSB信号扭曲之间的权衡.
- AEKF可实现高精度稳定和强大的性能,即使在显著降低的二度振幅.
- 该方案为OCS-SSB应用实现高抑制比率和稳定性提供了实际解决方案,包括新的定向侧带控制.
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