On-chip optical matrix-vector multiplier based on mode division multiplexing
Qiaolv Ling,
Penghui Dong,
Yayan Chu,
Xiaowen Dong,
Jingye Chen,
Daoxin Dai,
Yaocheng Shi
Affiliations
Qiaolv Ling
State Key Laboratory for Modern Optical Instrumentation, Centre for Optical and Electromagnetic Research, College of Optical Science and Engineering, International Research Center for Advanced Photonics, Zhejiang University, Zijingang Campus, Hangzhou 310058, China; Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
Penghui Dong
State Key Laboratory for Modern Optical Instrumentation, Centre for Optical and Electromagnetic Research, College of Optical Science and Engineering, International Research Center for Advanced Photonics, Zhejiang University, Zijingang Campus, Hangzhou 310058, China; Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
Yayan Chu
Huawei Technologies Co., Ltd, Shenzhen 518000, China
Xiaowen Dong
Huawei Technologies Co., Ltd, Shenzhen 518000, China
Jingye Chen
State Key Laboratory for Modern Optical Instrumentation, Centre for Optical and Electromagnetic Research, College of Optical Science and Engineering, International Research Center for Advanced Photonics, Zhejiang University, Zijingang Campus, Hangzhou 310058, China; Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
Daoxin Dai
State Key Laboratory for Modern Optical Instrumentation, Centre for Optical and Electromagnetic Research, College of Optical Science and Engineering, International Research Center for Advanced Photonics, Zhejiang University, Zijingang Campus, Hangzhou 310058, China; Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
Yaocheng Shi
State Key Laboratory for Modern Optical Instrumentation, Centre for Optical and Electromagnetic Research, College of Optical Science and Engineering, International Research Center for Advanced Photonics, Zhejiang University, Zijingang Campus, Hangzhou 310058, China; Ningbo Research Institute, Zhejiang University, Ningbo 315100, China; Corresponding author.
A matrix-vector multiplication (MVM) optical signal processor based on mode division multiplexing (MDM) was proposed and demonstrated in the current work, which is composed of a mode multiplexer, a multimode beam splitter, a mode demultiplexer, a modulator array and combiners. In addition, the characteristics of MDM obviate the need for multiple wavelengths and therefore multiple laser light sources are unneeded, which greatly reduces the complexity and cost. A 4 × 4 MDM-MVM was realized on a standard silicon-on-insulator (SOI) platform. Combined with the off-chip light source and photodetectors (PDs), 4-level modulation has been demonstrated, and each level of the output signal could represent 2 bits of information.
