概括
这项研究介绍了一种基于化的新型偏振旋转器,用于尼酸在绝缘体上的光子设备. 这种紧的设备实现了高极化灭绝比和转换效率,使得更广泛的应用.
科学领域:
- 光子学 是一个光子学.
- 材料科学 材料科学 材料科学
- 集成光学 集成光学 集成光学
背景情况:
- 酸在绝缘体上的光子设备 (LNOI) 是高度研究的,但由于高折射率对比度和材料双折射,因此受到极化灵敏度的影响.
- 这种极化灵敏度限制了基于LNOI的光子设备的实际应用.
研究的目的:
- 为LNOI光子设备设计和演示一个简单,紧,高效的偏振旋转器 (PR).
- 为了克服LNOI平台的偏振灵敏度限制.
主要方法:
- 提出了一个横向不对称的肋骨波导结构.
- 一层半无限化介电材料沉积在肋骨波导的一侧.
- 进行模拟来分析设备性能,包括偏振旋转,灭绝比,插入损失和转换效率.
主要成果:
- 实现了一个极化旋转器,长度为15.77μm.
- 获得了高性能指标:分极灭绝比 (PER) 为38.57/68.95dB,插入损失 (IL) 为0.2/0.22dB,分极转换效率 (PCE) 分别为TE0和TM0模式的99.99%/近100%,在1.55μm.
- 在保持高PER (>20dB),低IL (<0.32dB) 和高PCE (>99%) 的同时,证明了大约120nm的广泛操作带宽.
结论:
- 提出的带有化的横向不对称的肋骨波导提供了一个简单,紧,高效的解决方案,用于LNOI光子设备的偏振控制.
- 该设备具有出色的性能特性和广泛的操作带宽,使其适合实际应用.
- 分析了制造公差,表明了拟议设计的强度.
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