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Design and Analysis of All-Optical Isolator Based on Linear Photonic Crystal

Goswami, Kamanashis ; Mondal, Haraprasad ; Sen, Mrinal ; Sharma, Anup

Brazilian journal of physics, 2022-06, Vol.52 (3), Article 78 [Periódico revisado por pares]

New York: Springer US

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  • Título:
    Design and Analysis of All-Optical Isolator Based on Linear Photonic Crystal
  • Autor: Goswami, Kamanashis ; Mondal, Haraprasad ; Sen, Mrinal ; Sharma, Anup
  • Assuntos: Crystal lattices ; Crystal structure ; Electric fields ; General and Applied Physics ; Integrated circuits ; Isolators ; Mathematical analysis ; Optical communication ; Performance measurement ; Photonic crystals ; Physics ; Physics and Astronomy ; Plane waves ; Time domain analysis ; Waveguides
  • É parte de: Brazilian journal of physics, 2022-06, Vol.52 (3), Article 78
  • Descrição: In essence of fundamental challenges faced by optical industry, it is quite arduous to achieve all optical isolator. It has become urgent for optical communication to meet the demand of fast-moving digital world. A new T-shaped design of an all-optical isolator, based on square lattice (rods in air) of two-dimensional photonic crystal (PhC) structure, has been proposed. The proposed isolator operates on the principle of optical beam interference within the waveguides. The bias signal is capable to make the device function as an all-optical isolator by interfering with signals coming from input as well as output ports. The performance of the projected device has been analyzed and several performance metrics have been calculated. Plane wave expansion (PWE) and finite difference time domain (FDTD) methods have been used to calculate the band structure and to analyze the device performances by observing electric field distribution, respectively. The simulation results show the high contrast ratio of ~ 10 dB at worst case scenario. Owing to its simple with ultra-compact footprint (131 µm 2 ) and high contrast ratio altogether make the device practicable for future generation on chip photonic integrated circuits.
  • Editor: New York: Springer US
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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