inis 21(28): e4

Research Article

A compact 1×3 two-mode selective silicon photonic router/switch using two tunable phase shifters

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  • @ARTICLE{10.4108/eai.17-9-2021.170962,
        author={Duong Quang Duy and Truong Cao Dung and Dang Hoai Bac and Nguyen Binh and Nguyen Tan Hung and Tang Tan Chien and Le Thi Phuong Mai and Nguyen Vy Rin and Phan Thi Thanh Van},
        title={A compact 1×3 two-mode selective silicon photonic router/switch using two tunable phase shifters},
        journal={EAI Endorsed Transactions on Industrial Networks and Intelligent Systems},
        volume={8},
        number={28},
        publisher={EAI},
        journal_a={INIS},
        year={2021},
        month={9},
        keywords={mode division multiplexing, silicon-on-insulator, multimode interference waveguides, Y-junction coupler, mode multiplexing switch},
        doi={10.4108/eai.17-9-2021.170962}
    }
    
  • Duong Quang Duy
    Truong Cao Dung
    Dang Hoai Bac
    Nguyen Binh
    Nguyen Tan Hung
    Tang Tan Chien
    Le Thi Phuong Mai
    Nguyen Vy Rin
    Phan Thi Thanh Van
    Year: 2021
    A compact 1×3 two-mode selective silicon photonic router/switch using two tunable phase shifters
    INIS
    EAI
    DOI: 10.4108/eai.17-9-2021.170962
Duong Quang Duy1,*, Truong Cao Dung1, Dang Hoai Bac1, Nguyen Binh1, Nguyen Tan Hung2, Tang Tan Chien3, Le Thi Phuong Mai3, Nguyen Vy Rin2, Phan Thi Thanh Van2
  • 1: Posts and Telecommunications Institute of Technology, Vietnam
  • 2: The University of Danang - Advanced Institute of Science and Technology, Vietnam
  • 3: The University of Danang - University of Science and Technology, Vietnam
*Contact email: duydq@ptit.edu.vn

Abstract

In this work, we propose a design in the proof-of-concept of a 1×3 two-mode selective silicon-photonics router/switch. The proposed device composes of a Y-junction coupler, two multimode interference (MMI) couplers, and two phase-shifters on the silicon-on-insulator (SOI) rib waveguides. The input modes of TE0 and TE1 can be arbitrarily and simultaneously routed to the yearning output ports by setting appropriate values (ON/OFF) for two tunable phase shifters (PSs). The structural optimization and efficient characterization processes are carried out by numerical simulation via three-dimensional beam propagation method. The proposed device exhibits the operation ability over the C-band with good optical performances in terms of insertion loss smaller than 1 dB, crosstalk under -19 dB, and relatively large geometry tolerances. Moreover, the proposed device can integrate into a footprint as compact as 5 μm ×475 μm. Such significant advantages are beneficial and promising potentials for very large-scale photonic integrated circuits, high-speed optical interconnects, and short-haul few-mode fiber communication systems.