Monolithic InP Stokes Vector Receiver With Multiple-Quantum-Well Photodetectors
Monolithic InP Stokes Vector Receiver With Multiple-Quantum-Well Photodetectors
复制标题
具有多量子阱光电探测器的单片 InP 斯托克斯矢量接收器
DOI：
10.1109/jlt.2017.2780905
复制
发表时间：
2018
影响因子：
4.7
通讯作者：
Tanemura Takuo
中科院分区：
文献类型：
--
作者：
Suganuma Takahiro;Ghosh Samir;Kazi Mohiyuddin;Kobayashi Ryoma;Nakano Yoshiaki;Tanemura Takuo
斯托克斯矢量调制直接检测（SVM-DD）格式在短距离通信链路中获得了特别的关注，以传输多电平信号而无需使用昂贵的相干接收机。在本文中，我们制造和实验证明了一个潜在的低成本DD为基础的SV接收器与片上的光电探测器（PD）在一个紧凑的InP芯片。压缩应变多量子阱PD阵列与基于自对准半脊结构的多模干涉分束器和SV旋转器组成的SV投影电路单片集成。从在三个片上PD的光电流信号，输入光的SV被成功地检索在整个庞加莱球。由于InP基PD具有潜在的宽工作带宽，所演示的器件可能是未来短距离SVM-DD系统实现低成本和高速接收器的有吸引力的候选者。
Stokes vector modulation direct-detection (SVM-DD) formats have attained special attention in the short-reach communication links to transmit multilevel signals without using costly coherent receivers. In this paper, we fabricate and experimentally demonstrate a potentially low-cost DD-based SV receiver with on-chip photodetectors (PD) on a compact InP chip. Compressively strained multiple-quantum-well PD array is monolithically integrated with the SV projection circuit, which consists of multimode interference splitter and SV rotators based on self-aligned half-ridge structure. From the photocurrent signals at three on-chip PDs, the SV of input light is retrieved successfully over the entire Poincaré sphere. With potentially broad operating bandwidth of InP-based PDs, the demonstrated device may be an attractive candidate to realize low-cost and high-speed receivers for the future short-reach SVM-DD systems.