Related Experiment Video
Updated: Jul 6, 2026
12:19
Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
Published on: April 4, 2017
Improved design of a polarization converter based on semiconductor optical waveguide bends
Applied Optics
|March 28, 2008
Summary
Researchers developed an improved semiconductor waveguide polarization converter. This novel design achieves nearly 100% polarization conversion with minimal loss using a single deeply etched, bent waveguide section.
Area of Science:
- Photonics and Waveguide Optics
- Semiconductor Device Design
Background:
- Polarization converters are crucial components in integrated photonic circuits.
- Existing designs often face challenges with efficiency, loss, or fabrication complexity.
Purpose of the Study:
- To present an improved design for a polarization converter.
- To achieve high polarization conversion efficiency with minimal radiation loss.
Main Methods:
- Utilized an efficient vector finite-element-based beam-propagation method.
- Designed a single-section, deeply etched, bent semiconductor waveguide.
- Optimized bend radius, waveguide width, and sidewall angle.
Main Results:
- Achieved a polarization conversion ratio close to 100%.
- Demonstrated negligible radiation loss.
- Maintained a bending angle under 180 degrees.
Conclusions:
- The proposed deeply etched bent waveguide offers a highly efficient polarization conversion solution.
- This design is suitable for compact integrated photonic applications.
- The optimized parameters ensure robust performance and minimal signal degradation.
