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Plasmonic loss-mitigating broadband adiabatic polarizing beam splitter.
Optics Letters
|February 1, 2022
Summary
We developed a broadband integrated polarization beam splitter using stimulated Raman adiabatic passage (STIRAP) in plasmonics. This novel device enables near-lossless light transfer across S-, C-, and L-bands, advancing integrated optics.
Area of Science:
- Integrated photonics
- Quantum optics
- Plasmonics
Background:
- The analogy between quantum physics and optics drives innovation in integrated photonics.
- Developing broadband integrated devices with high performance is a key challenge.
Purpose of the Study:
- To numerically demonstrate a broadband integrated polarization beam splitter (PBS).
- To implement the stimulated Raman adiabatic passage (STIRAP) technique in a plasmonic system for PBS design.
Main Methods:
- Numerical simulation of a three-waveguide plasmonic system.
- Application of the STIRAP technique for polarization beam splitting.
Main Results:
- Achieved >250 nm TM bandwidth (<-40 dB extinction) and >150 nm TE bandwidth (<-20 dB extinction).
- Covered S-, C-, L-bands and part of the E-band.
- Demonstrated near-lossless light transfer using STIRAP's loss-mitigating properties in a plasmonic hybrid waveguide.
Conclusions:
- The proposed STIRAP-based PBS offers broadband operation and high extinction ratios.
- This approach enables realization of previously impossible broadband integrated devices.
- Paves the way for innovation in integrated optics and photonics.
