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Hybrid plasmonic waveguide-based ultra-low insertion loss transverse electric-pass polarizer
Optics Letters
|September 9, 2016
Summary
We developed a compact silicon-on-insulator polarizer that efficiently passes the transverse electric (TE) mode while blocking the transverse magnetic (TM) mode. This device offers excellent performance with low loss and a wide operational bandwidth.
Area of Science:
- Photonics
- Integrated Optics
- Nanophotonics
Background:
- Polarizers are essential components in photonic integrated circuits.
- Existing polarizers often suffer from high insertion loss or limited bandwidth.
- Efficient on-chip polarizers are needed for advanced optical systems.
Purpose of the Study:
- To design and demonstrate an integrated transverse electric (TE)-pass polarizer.
- To achieve high extinction ratio and low insertion loss on a silicon-on-insulator platform.
- To develop a compact and robust polarization-selective device.
Main Methods:
- Utilized an asymmetric coupling section in a plasmonic waveguide.
- Engineered mode coupling to selectively attenuate the transverse magnetic (TM) mode.
- Fabricated the device on a silicon-on-insulator (SOI) platform.
Main Results:
- Demonstrated a 30 μm long TE-pass polarizer.
- Achieved an extinction ratio exceeding 28 dB over a 150 nm bandwidth.
- Obtained an ultra-low insertion loss of less than 0.04 dB for the TE mode.
- Showcased good fabrication tolerance.
Conclusions:
- The proposed integrated polarizer offers excellent performance metrics.
- The device is suitable for various silicon photonic applications.
- This work contributes to the development of advanced on-chip optical components.
