Design of integrated optical circulator based on photonic crystals

Citation

H.R. Dehghanpour, H. Alisafaeeb, and S.M. Molavi Arabshahi, (2014). Design of integrated optical circulator based on photonic crystals.

Keywords

• Photonic crystal
• Optical circulator
• Integrated optics
• Magneto-optics
• Faraday rotation
• Bi:YIG (BIG)
• Waveguide
• Resonant cavity
• Temporal coupled mode theory
• OptiFDTD software
• Photonic band gap
• Defect
• Unidirectional propagation
• Rotational symmetry
• Extinction ratio (inferred from simulation results)
• Optical loss (inferred from simulation results)
• Integrated optical circuits

Brief

This article presents the design and simulation of a compact integrated optical circulator based on a two-dimensional photonic crystal waveguide and a resonant cavity in Bi:YIG, aiming to achieve unidirectional light propagation through enhanced Faraday rotation for integrated optical circuits.

Summary

This article presents the design and simulation of a compact optical circulator for integrated optics based on a two-dimensional photonic crystal waveguide with a resonant cavity made of Bi:YIG (BIG). The design leverages the enhanced Faraday rotation within the defect-containing photonic crystal to achieve unidirectional light propagation between three ports. Numerical simulations using OptiFDTD software confirmed the functionality of the designed circulator, showing light entering one port and exiting another in a specific direction. This work contributes to the development of low-cost and practical integrated magneto-optical structures.

Origin: https://sci.bban.top/pdf/10.1016/j.ijleo.2014.01.125.pdf#