Affiliation:
1. Zhejiang Key Laboratory of Photoelectric Detection Materials and Devices
2. Ningbo University
3. Ningbo Institute of Oceanography
Abstract
In this paper, we present the design of a compact reconfigurable polarization beam splitter (PBS) enabled by ultralow-loss phase-changing Sb2Se3. By harnessing the phase-change-mediated mode coupling in a directional coupler (DC), guided light with different polarizations could be routed into different paths and this routing could be dynamically switched upon the phase change of Sb2Se3. With an optimized DC region, the proposed PBS demonstrates efficient polarization splitting with crosstalk less than −21.3 dB and insertion loss less than 0.16 dB at 1550 nm for both phase states of Sb2Se3, and features energy efficient property benefitting from the nonvolatile phase change of Sb2Se3, which holds great potentials for on-chip applications involving polarization control, including polarization-division multiplexing system, quantum photonics, microwave photonics, etc.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Zhejiang Province
Natural Science Foundation of Ningbo Municipality
National Key Research and Development Program of China
Fundamental Research Funds for the Provincial Universities of Zhejiang
Open Research Fund of the Key Laboratory of All Optical Network and Advanced Telecommunication Network, Ministry of Education, China
K. C. Wong Magna Fund in Ningbo University
Subject
Atomic and Molecular Physics, and Optics
Cited by
2 articles.
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