光通信技术2025，Vol.49Issue(6)：1-7,7.DOI:10.13921/j.cnki.issn1002-5561.2025.06.001
基于DLN结构的硅基8×8光开关阵列芯片及高速驱动与校准系统
Silicon-based 8×8 optical switch array chip with high-speed driving and calibration system based on DLN structure
摘要
Abstract
To overcome the bandwidth and power consumption bottlenecks of traditional electrical switching technologies,a silicon-based 8×8 optical switch array chip based on an expanded double-layer network(DLN)structure,along with a high-speed driving and calibration system is proposed.The system employs Mach-Zehnder interferometers(MZI)as switching units,utilizing the carrier dispersion effect to achieve high-speed push-pull driving,while thermal optical phase shifters are used for initial phase calibration.The system incorporates differential amplifiers and digital-to-analog converters(DAC)to construct the driving circuit,coupled with a one-dimensional search algorithm based on field-programmable gate arrays(FPGA)to enable rapid calibration,reducing the calibration time for a single MZI unit to just 36 ms.Experimental results demonstrate that the op-tical switch array achieves an insertion loss of 9 dB at a wavelength of 1 310 nm,with crosstalk levels as low as-32 dB,a path switching response time of 81 ns,and a-25 dB crosstalk bandwidth extended to 70 nm.关键词
光开关阵列/马赫-曾德尔干涉仪/驱动控制电路/校准算法Key words
optical switch array/Mach-Zehnder interferometer/driving and control circuit/calibration algorithm分类
信息技术与安全科学引用本文复制引用
周堋昊,陆梁军,高伟,李鑫,陈建平,周林杰..基于DLN结构的硅基8×8光开关阵列芯片及高速驱动与校准系统[J].光通信技术,2025,49(6):1-7,7.基金项目
国家自然科学基金项目(62135010)资助. （62135010）
