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基于SOA的光学爆发功率平衡用于高速下一代被动光学网络.
Optics express
|June 14, 2025
概括
新型半导体光学放大器 (SOA) 技术在100 Gb/s被动光学网络 (PON) 中等同爆发功率. 这项创新扩大了动态范围,简化了接收器设计,减少了未来高速光学网络中复杂组件的需求.
科学领域:
- 光学通信工程 光学通信工程
- 光子学是指光子学的使用方法.
- 网络基础设施 网络基础设施
背景情况:
- 高速被动光学网络 (PON) 需要先进的调制格式,如为100Gb/s速度的4级脉冲振幅调制 (PAM4).
- 现有的爆发模式跨阻抗放大器 (BM-TIA) 难以满足PON中高速PAM4信号的动态范围和带宽需求.
- 半导体光学放大器 (SOA) 被探索为接收器预放大器,以管理信号噪声比和PON损失预算.
研究的目的:
- 引入基于SOA的新型光学域爆电平衡技术,用于简化爆电模式接收器设计.
- 为了克服传统BM-TIA在高速PON上游传输中的动态范围和带宽限制.
- 为了减轻高功率爆发传输中的非线性SOA模式效应.
主要方法:
- 开发和实施两种基于SOA的等分技术:可变偏差和控制光注入.
- 在100 Gb/s PAM4系统中进行实验验证,其PON损失预算为29 dB.
- 对比特错误率 (BER) 与软决策前期错误纠正 (SD-FEC) 值的评估.
主要成果:
- 扩展动态范围至24dB,超过ITU-T 50G标准规定的20.5dB.
- 保持了低于SD-FEC值的BER,证明了强大的信号完整性.
- 减少了高收益BM-TIA和复杂的数字信号处理 (DSP) 的必要性.
结论:
- 基于SOA的爆电平衡为未来的高速光学网络提供了具有成本效益和可扩展性的解决方案.
- 拟议的方法通过减轻带宽限制并允许使用线性均等化来简化接收器设计.
- 这种方法提高了系统性能,并为增加数据速率需求的PON提供了未来的证据.
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