Heterogeneously Integrated PLC With Low-Loss Spot-Size Converter and Newly Developed Waveplate PBS for DC-DP-16QAM Receiver
Heterogeneously Integrated PLC With Low-Loss Spot-Size Converter and Newly Developed Waveplate PBS for DC-DP-16QAM Receiver
复制标题
具有低损耗光斑尺寸转换器和新开发的用于 DC-DP-16QAM 接收器的波片 PBS 的异构集成 PLC
DOI：
10.1109/jlt.2014.2380814
复制
发表时间：
2015
影响因子：
4.7
通讯作者：
Y. Muramoto
中科院分区：
文献类型：
--
作者：
Y. Kurata;Y. Hashizume;S. Aozasa;M. Itoh;T. Hashimoto;H. Tanobe;Y. Nakanishi;E. Yoshida;H. Fukuyama;H. Yamazaki;T. Goh;H. Yokoyama;Y. Muramoto
具有多电平和多载波调制格式的数字相干传输系统已经超越了100-G系统。本文报道了一种基于硅基平面光波电路（PLC）集成平台的单片400-G相干接收机。为了将偏振分束器（PBS）、两个偏振旋转器、四光杂化器和16个高速光电二极管（pd）集成在一个芯片上，我们采用了最小弯曲半径为300 μm的5%-Δ波导和inp - pd的非均匀集成。为了在不降低光被动性能的情况下实现紧凑的接收器，我们还研究了具有低损耗和高制造公差的三支光斑尺寸转换器和具有高偏振消光比的波片型PBS。利用这些技术，我们制作了一个双载波双极化（DP） 16电平正交调幅（QAM）接收机PLC，并成功演示了每个通道32-Gbaud DP- 16qam信号解调。
Digital coherent transmission systems with multilevel and multicarrier modulation formats have been moving beyond 100-G systems. In this paper, we report a one-chip 400-G coherent receiver founded on a silica-based planar lightwave circuit (PLC) integration platform. To integrate a polarization beam splitter (PBS), two polarization rotators, four-optical hybrids, and 16 high-speed photodiodes (PDs) in one chip, we employed a 5%-Δ waveguide with a minimum bending radius of 300 μm, and the heterogeneous integration of InP-PDs. To achieve a compact receiver without any degradation in optical passive performance, we also investigated a three-branched spot size converter with a low loss and a high-fabrication tolerance and a waveplate type PBS with a high-polarization extinction ratio. Using these techniques, we fabricated a dual-carrier dual-polarization (DP) 16-level quadrature amplitude modulation (QAM) receiver PLC, and successfully demonstrated 32-Gbaud DP-16QAM signal demodulation for each channel.