Compact and broadband polarization splitter-rotator on thin-film lithium niobate minimized with the fast quasi-adiabatic algorithm
Polarization splitter-rotators (PSRs) are crucial for on-chip polarization-division multiplexing (PDM) systems. Here, we design and experimentally demonstrate a compact and broadband PSR based on adiabatic mode evolution on a thin-film lithium niobate (TFLN) platform. A novel, to the best of our knowledge, quasi-adiabatic algorithm is proposed to minimize the device size. The fabricated PSR, with an adiabatic waveguide length of only 0.4 mm, exhibits an insertion loss of <0.64 dB and a polarization extinction ratio of >20 dB over a 122-nm bandwidth.
Authors
- Jinsong Xia (ORCID: https://orcid.org/0000-0002-9650-7839)
- Siyu Lu (ORCID: https://orcid.org/0009-0006-3350-1436)
- Jun-Jie Wei (ORCID: https://orcid.org/0000-0003-0162-2488)
- Chijun Li
- Geng Chen (ORCID: https://orcid.org/0000-0003-3619-3951)
- Xiangyu Meng (ORCID: https://orcid.org/0009-0009-4057-1434)
- Yu-Chen Huang
- Cheng Zeng (ORCID: https://orcid.org/0000-0002-8810-0844)
- An Pan
- Yiqi Dai
Institutions
- San’an Optoelectronics (China) (CN)
Publication Details
- Journal
- Optics Letters
- Published
- 2024-12-24
- DOI
- https://doi.org/10.1364/ol.546435
- Citations
- 5
- Primary Topic
- Photonic and Optical Devices
- Type
- article
- Field-Weighted Citation Impact
- 1.04
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Hubei Province
- National Key Research and Development Program of China