• Laser & Optoelectronics Progress
  • Vol. 61, Issue 11, 1116006 (2024)
Zong Wang1, Guanyu Chen2, Yu Yu1,*, and Xinliang Zhang1
Author Affiliations
  • 1Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430070, Hubei, China
  • 2Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583
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    DOI: 10.3788/LOP240951 Cite this Article Set citation alerts
    Zong Wang, Guanyu Chen, Yu Yu, Xinliang Zhang. Polarization-Independent Electro-Optical Modulator Based on Thin-Film Lithium Niobate (Invited)[J]. Laser & Optoelectronics Progress, 2024, 61(11): 1116006 Copy Citation Text show less

    Abstract

    A polarization-independent electro-optical modulator based on thin-film lithium niobate (TFLN) is proposed; it is based on a polarization-independent beam splitter and a mode converter. The polarization-independent beam splitter achieves precise beam splitting of TE0 and TM0 modes, whereas the mode converter efficiently converts the input TM0 mode to TE1 mode. Accordingly, the traveling-wave electrode structure loaded with periodic capacitors achieves efficient electro-optical modulation of two light modes. The simulation results show that the electro-optical bandwidth of the modulator is greater than 100 GHz. This helps solve the instability problem caused by polarization sensitivity in existing electro-optical modulators and opens up new research lines for TFLN-based modulators.
    Zong Wang, Guanyu Chen, Yu Yu, Xinliang Zhang. Polarization-Independent Electro-Optical Modulator Based on Thin-Film Lithium Niobate (Invited)[J]. Laser & Optoelectronics Progress, 2024, 61(11): 1116006
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