Compact Lithium-Niobate-on-Insulator Polarization Rotator Based on Asymmetric Hybrid Plasmonics Waveguide

We proposed a compact and efficient polarization rotator (PR) based on an asymmetric hybrid plasmonics waveguide (HPW) on the lithium-niobate-on-insulator (LNOI) platform. We focus on the design of rotation angle and balance between the two hybrid modes. The presented device exhibits a polarization...

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Bibliographic Details
Published in:IEEE photonics journal 2021-08, Vol.13 (4), p.1-5
Main Authors: Zhao, Yiru, Yu, Wenqi, Dai, Shuangxing, Li, Jinye, Lin, Tao, Li, Mingxuan, Liu, Jianguo
Format: Article
Language:English
Subjects:
Asymmetry
Couplings
Hybrid modes
Insertion loss
Interference
Lithium niobates
Lithium-niobate-on-insulator
Optical polarization
Optical waveguides
Plasmonics
Plasmons
Polarization
polarization rotator
Propagation losses
Ribs
Rotation
Tolerances
Waveguides
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Summary:We proposed a compact and efficient polarization rotator (PR) based on an asymmetric hybrid plasmonics waveguide (HPW) on the lithium-niobate-on-insulator (LNOI) platform. We focus on the design of rotation angle and balance between the two hybrid modes. The presented device exhibits a polarization extinction ratio as high as 59.58 dB and an insertion loss of 1.44 dB with the rotation length of only 13.7 \mum. The fabrication tolerances and a suitable process are also discussed to meet the state-of-art technology.
ISSN:1943-0655
1943-0655
1943-0647
DOI:10.1109/JPHOT.2021.3094797