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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
Multicolor filter all-garnet magneto-optical photonic crystals
N Ansari1, S I Khartsev, A M Grishin
1Department of Condensed Matter Physics, KTH Royal Institute of Technology, Stockholm-Kista, Sweden.
Optics Letters
|September 4, 2012
Summary
Researchers developed a novel multicolor optical filter and isolator using a double-cavity magneto-optical (MO) photonic crystal. This device offers low-loss, high Faraday rotation passbands and strong light rejection for advanced optical applications.
Area of Science:
- Photonics
- Materials Science
- Optoelectronics
Background:
- Magneto-optical (MO) materials are crucial for optical isolators and filters.
- Photonic crystals offer unique light manipulation properties.
- Integrating MO materials with photonic crystals can lead to advanced optical devices.
Purpose of the Study:
- To demonstrate a novel multicolor optical filter and isolator.
- To utilize a double-cavity magneto-optical (MO) photonic crystal for enhanced performance.
- To optimize the device for low-loss and high Faraday rotation.
Main Methods:
- Heteroepitaxial growth of an all-garnet multilayer structure.
- Fabrication of a double-cavity photonic crystal design.
- Optimization of cavity spacing and distributed Bragg reflector (DBR) repetition.
Main Results:
- Achieved a strong MO response with high optical transmittance.
- Demonstrated low-loss, high Faraday rotation passbands.
- Obtained strong light rejection within the stop band.
Conclusions:
- The developed double-cavity MO photonic crystal is effective for multicolor optical filtering and isolation.
- Device performance is significantly improved through structural optimization.
- This technology holds promise for advanced optical communication and sensing systems.
