Permeability retrieval in InP-based waveguide optical device combined with metamaterial

Area of Science:

• Photonics
• Materials Science
• Electromagnetism

Background:

• Metamaterials offer unique electromagnetic properties not found in natural materials.
• Accurate characterization of metamaterial constitutive parameters is crucial for device design.
• Waveguide-based photonic devices require precise control over light-matter interactions.

Purpose of the Study:

• To develop and demonstrate a novel measurement technique for determining the complex permeability of metamaterials.
• To validate the technique using an Indium Phosphide (InP)-based Mach-Zehnder interferometer and a split-ring resonator metamaterial.
• To enable the design of advanced photonic integrated circuits utilizing metamaterial functionalities.

Main Methods:

• Fabrication of an InP-based Mach-Zehnder interferometer integrated with a split-ring resonator metamaterial layer.
• Optical characterization of the device at a wavelength of 1.5 μm.
• Analysis of the interference patterns to extract the complex permeability of the metamaterial.

Main Results:

• The constructed device successfully measured the complex permeability of the metamaterial.
• A non-unity relative permeability was observed at 1.5 μm, attributed to magnetic interaction with light.
• The measurement method proved effective for characterizing waveguide-based photonic devices.

Conclusions:

• The developed interferometric method is a viable tool for determining metamaterial constitutive parameters.
• This technique facilitates the integration of metamaterials into photonic integrated circuits.
• Accurate characterization is key to unlocking the full potential of metamaterials in optical applications.