Journal of Infrared and Millimeter Waves, Volume. 43, Issue 6, 828(2024)
High polarization extinction ratio achieved base on thin-film lithium niobate
Figures & Tables(10)
Fig. 1. （a）Ridge waveguide fabrication diagram；（b）ridge waveguide mode diagram
Fig. 3. Effective refractive index plots of TE0 and TM0 under different Rib width
Fig. 4. Lithium niobate nanowaveguide subwavelength grating model diagram
Fig. 8. （a）TE and TM loss diagrams at different wavelengths；（b）TEPASS polarization extinction ratio relationship diagram at different wavelengths
Table 1. Parameter tables for Subwavelength grating TEPASS
View tableView in ArticleTable 1. Parameter tables for Subwavelength grating TEPASS
Extinction polarization state TEPASS L1（ ） 1 L2（ ） 6 L3（ ） 5 w1（ ） 1 w2（ ） 2 w3（ ） 0.3 Λ（n ） 456 a（n ） 364.8
Table 2. Comparison of PER solutions implemented on LNOI platform
View tableView in ArticleTable 2. Comparison of PER solutions implemented on LNOI platform
PER@1 550 nm result size/ Extinction polarization state IL@1 550 nm /dB ［ 7 ］20 Simulated 23 TM 2 ［ 6 ］28.72 Simulated 1 000 TE 0.286 ［ 6 ］24.03 Simulated 1 000 TM 0.013 ［ 2 ］30.6 Experimental 55 TM 1.3 ［ 3 ］≈20 Experimental 300 TM ≈2 ［ 3 ］≈20 Experimental 300 TE ≈2 This work 29 Experimental 19.21 TE 1.5
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Yong-Kang YANG, Hong-Jie GUO, Wen-Bin CHEN, Bai-Ang QU, Zhi-Guo YU, Man-Qing TAN, Wen-Tao GUO, Hai-Feng LIU. High polarization extinction ratio achieved base on thin-film lithium niobate[J]. Journal of Infrared and Millimeter Waves, 2024, 43(6): 828
Paper Information
Category: Infrared Optoelectronic System and Application Technology
Received: Mar. 22, 2024
Accepted: --
Published Online: Dec. 13, 2024
The Author Email: Man-Qing TAN (mqtan@semi.ac.cn), Wen-Tao GUO (wtguo@semi.ac.cn)
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