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Broadband integrated optic polarization splitters by incorporating polarization mode extracting waveguide.
Guanghao Huang1, Tae-Hyun Park1, Min-Cheol Oh2
1Department of Electronics Engineering, Pusan National University, Busan, 46241, Korea.
Scientific Reports
|July 8, 2017
Summary
We developed a novel polarization splitter using liquid crystal polymer for optical communications. This device efficiently extracts the TE polarized mode with high performance and broadband operation.
Area of Science:
- Photonics and Optical Engineering
- Materials Science
Background:
- Integrated optic polarization splitters are crucial for advanced optical systems.
- Existing devices face limitations in performance and operating bandwidth.
Purpose of the Study:
- To propose and demonstrate a compact polarization splitter.
- To utilize a highly birefringent liquid crystal polymer for mode extraction.
Main Methods:
- Fabrication of a Y-branch optical waveguide.
- Integration of a reactive mesogen polymer into the waveguide.
- Characterization of polarization splitting ratio and crosstalk across a wavelength range.
Main Results:
- Achieved a polarization splitting ratio of 27 dB.
- Maintained crosstalk below -25 dB from 1500 to 1600 nm.
- Demonstrated thermal stability up to 100°C for 12 hours.
Conclusions:
- The proposed device offers efficient TE mode extraction.
- Broadband operation and thermal stability are key advantages.
- This technology is suitable for polarization multiplexed communications and sensing applications.
