概括
本研究介绍了一条基于的光学实时延迟线 (OTTDL),提供连续调节. 这种新的设计实现了广泛的调范围和低延迟误差,使集成光子学的实际应用成为可能.
科学领域:
- 光子学和光学工程 光子学和光学工程
- 集成光学 集成光学 集成光学
- 信号处理 信号处理
背景情况:
- 在芯片上的光学实时延迟线 (OTTDL) 对于像分相阵列天线这样的应用至关重要.
- 现有的OTTDL通常具有离散的调步骤,限制了它们的精度和适用性.
- 对于先进的光学系统来说,具有很大的延迟范围的连续调整能力是非常理想的.
研究的目的:
- 提出和演示基于的连续调的宽带OTTDL.
- 为了实现高精度的大组延迟调节范围.
- 为集成的OTTDLs开发一个简化的校准方法.
主要方法:
- 在平台上集成7位延迟线与基于开关的连续调节的延迟线.
- 组延迟调范围,延迟错误和延迟波动的实验性表征.
- 分析延迟波动的原因及其对光束成形的影响.
- 开发和验证一种简化的非侵入性校准方法.
主要成果:
- 展示一个可连续调节的OTTDL,其群延迟范围从0到1020.16ps.
- 在 -1.27 ps 到 1.75 ps 之间实现了延迟误差.
- 观察到的延迟波动在225 GHz频率范围内低于2.69 ps.
- 成功提出并分析了一种简化校准技术.
结论:
- 拟议的基于的可连续调节OTTDL实现了显著的延迟调节范围和高精度.
- 开发的校准方法简化了这个过程,并且对于复杂的系统是可扩展的.
- 芯片和校准方法的高性能为集成OTTDL的实际应用铺平了道路.
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