Related Experiment Video
Updated: Jun 19, 2026
11:08
Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
18.8K
Waveguide-integrated spatial mode filters with PtSe2 nanoribbons
Tianping Xu1,2, Zhengkun Xing1,2, Shuqi Xiao3
1School of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin, China.
Nanophotonics (Berlin, Germany)
|February 19, 2025
Summary
Researchers developed novel waveguide-integrated spatial mode filters using platinum diselenide (PtSe₂) nanoribbons on silicon waveguides. These filters effectively suppress unwanted modes, advancing mode-division multiplexing (MDM) for optical communications.
Area of Science:
- Heterogeneous silicon photonics
- Low-dimensional materials
- Integrated optoelectronics
Background:
- Silicon photonics is crucial for integrated optoelectronics across various wavelengths.
- Waveguide components for mode-division multiplexing (MDM) using low-dimensional materials are underexplored.
Purpose of the Study:
- To demonstrate waveguide-integrated spatial mode filters for eliminating modal crosstalk.
- To utilize platinum diselenide (PtSe₂) nanoribbons on silicon waveguides for enhanced filtering.
Main Methods:
- Integration of ten-layer PtSe₂ nanoribbons onto ultrathin silicon waveguides.
- Design of deep-subwavelength silicon waveguides for mode manipulation.
- Characterization of modal extinction ratios at 2200-nm wavelength.
Main Results:
- Achieved TE₁-to-TE₀ modal extinction ratio of 12 dB in a 100-μm waveguide.
- Achieved TE₂-to-TE₀ modal extinction ratio of 14.5 dB in a 75-μm waveguide.
- Demonstrated effective filtering of undesirable modes through interaction with PtSe₂ nanoribbons.
Conclusions:
- Developed a novel approach for waveguide-integrated spatial mode filters.
- PtSe₂-on-silicon waveguides show promise for on-chip MDM applications.
- This work facilitates advancements in optical interconnects and communications.
