Robust InP/InGaAsP Polarization Rotator Based on Mode Evolution
Robust InP/InGaAsP Polarization Rotator Based on Mode Evolution
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基于模式演化的鲁棒 InP/InGaAsP 偏振旋转器
DOI：
10.1109/lpt.2022.3141518
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发表时间：
2022
影响因子：
2.6
通讯作者：
Nakano Yoshiaki
中科院分区：
文献类型：
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作者：
Elfiqi Abdulaziz E.;Tanomura Ryota;Yu Dawei;Yanwachirakul Warakorn;Shao Haifeng;Suzuki Yuto;Tanemura Takuo;Nakano Yoshiaki
基于InP的偏振操纵器件正吸引人们持续的兴趣，以实现具有单片集成有源组件的紧凑型偏振复用收发器。在这里，我们提出并实验证明了一种新型的单片InP偏振旋转器（PR）的基础上，一个锥形半脊结构。由于基于模式演化的偏振轴沿传播沿着绝热旋转的原理，所展示的器件固有地表现出对制造误差的优异鲁棒性。在整个C波段实验获得了效率超过97%的容错转换。通过简单的自对准工艺和较厚的InP上包层，所展示的器件将适合于与其他InP基有源波导元件（如激光器、放大器和调制器）的低损耗集成。
InP-based polarization manipulating devices are attracting continuous interest to realize compact polarization multiplexed transceivers with monolithically integrated active components. Here, we propose and experimentally demonstrate a novel type of monolithic InP polarization rotator (PR) based on a tapered half-ridge structure. Owing to the principle of mode-evolution-based adiabatic rotation of the polarization axis along propagation, the demonstrated device inherently exhibits excellent robustness against fabrication errors. Error-tolerant conversion with an efficiency over 97% is obtained experimentally across the entireC-band. With the simple self-aligned process and a thick InP upper cladding, the demonstrated device would be suitable for low-loss integration with other InP-based active waveguide components, such as lasers, amplifiers, and modulators.