https://doi.org/10.1140/epjd/s10053-023-00768-5
Regular Article – Optical Phenomena and Photonics
Design and simulation of phase shifter based on multimode interference in photonic crystal waveguide
1
Dibrugarh University
Institute of Engineering and Technology, Dibrugarh University, Assam, India
2
Haldia Institute of Technology, 721657, Haldia, Purba Medinipur, West Bengal, India
3
Electronics Engineering, Indian Institute of Technology (ISM) Dhanbad, 826004, Jharkhand, India
Received:
7
June
2023
Accepted:
9
October
2023
Published online:
28
October
2023
This paper proposes a new design for a π-phase shifter and two π/2-phase shifters, which are based on a two-dimensional rods-in-air photonic crystal waveguide. The proposed devices have been designed using both triangular and square lattice photonic crystal structures. Notably, these phase shifters do not require any external energy source to operate. To calculate the band diagram of the PhC, the plane wave expansion method was utilized, while finite-difference time-domain simulation methodology was used to estimate and examine the performance of the proposed phase shifters. The simulation results demonstrate that the proposed π-phase shifter can achieve a bandwidth of 1.5THz, whereas the π/2-phase shifters, designed on triangular and square lattice can achieve bandwidths of 1.9THz and 1.35THz, respectively. Due to their straightforward design structure and energy independence, these devices are well-suited for future generations of all-optical photonic integrated circuits.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
