4.7 Article

Crosstalk-Free 32-ch DWDM Demultiplexer On Standard Si Pic Platform Enabled By Fully-Integrated Cascaded AMZ Triplet

期刊

JOURNAL OF LIGHTWAVE TECHNOLOGY
卷 41, 期 3, 页码 848-854

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2022.3216024

关键词

Wavelength division multiplexing; Silicon; Optical waveguides; Crosstalk; Temperature measurement; Heating systems; Error correction; Demultiplexing; Photonic integrated circuits; Silicon photonics

向作者/读者索取更多资源

We have demonstrated a crosstalk-free (-38.5 dB) 32-channel DWDM demultiplexer on a standard Si PIC platform, enabled by an autonomous calibration mechanism. The precise fabrication control required for suppressing crosstalk in large-channel-count DWDM systems has made this platform impractical. To overcome this, we proposed a calibration mechanism that can be fully integrated into an assembly composed of an electric IC and a standard Si PIC. This device provides a path to ultrahigh-capacity integrated DWDM transceivers, compatible with the vast component libraries of the standard Si PIC platform.
Enabled by an autonomous calibration mechanism, crosstalk-free (-38.5 dB) fabrication-tolerant 32-ch DWDM demultiplexer on a standard Si PIC platform is demonstrated for the first time. On this platform, due to its nano-sized waveguide core dimensions, extremely precise fabrication control of waveguides has been required so far to suppress the crosstalk of demultiplexers for large-channel-count DWDM systems. This requirement made this platform impractical for such systems. To exclude this requirement, we have proposed a calibration mechanism which can be fully integrated into an assembly composed of an electric IC (EIC) and a standard Si PIC. The Si PIC has a structure of cascaded asymmetric Mach-Zehnder (AMZ) triplet consisting of AMZ interferometers designed to function as a demultiplexer. This structure enables monitoring the errors in the optical lengths of waveguides composing itself. Based on the monitored values, the controller implemented on the EIC determines the driving conditions of waveguide heaters to eliminate the errors. This feature excludes the necessity to strictly control the optical lengths in the fabrication process, making it possible to realize a crosstalk-free 32-ch DWDM demultiplexer on a standard Si PIC platform. Compatible with the vast component libraries of standard Si PIC platform, this device provides a path to ultrahigh-capacity integrated DWDM transceivers.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据