title: Monolithically mode division multiplexing photonic integrated circuit for large-capacity optical interconnection.
abstract: We propose and fabricate an on-chip mode division multiplexed (MDM) photonic interconnection system. Such a monolithically photonic integrated circuit (PIC) is composed of a grating coupler, two micro-ring modulators, mode multiplexer/demultiplexer, and two germanium photodetectors. The signals' generation, multiplexing, transmission, demultiplexing, and detection are successfully demonstrated on the same chip. Twenty Gb/s MDM signals are successfully processed with clear and open eye diagrams, validating the feasibility of the proposed circuit. The measured power penalties show a good performance of the MDM link. The proposed on-chip MDM system can be potentially used for large-capacity optical interconnection in future high-performance computers and big data centers.
authors.forename: Guanyu
authors.initials: G
authors.lastname: Chen
authors.forename: Yu
authors.initials: Y
authors.lastname: Yu
authors.forename: Xinliang
authors.initials: X
authors.lastname: Zhang