Polarization-Independent Electro-Optical Modulator Based on Thin-Film Lithium Niobate (Invited)

被引:1
|
作者
Wang Zong [1 ]
Chen Guanyu [2 ]
Yu Yu [1 ]
Zhang Xinliang [1 ]
机构
[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430070, Hubei, Peoples R China
[2] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117583, Singapore
关键词
thin film lithium niobate; electro-optic modulator; polarization beam splitter; mode conversion; WAVE-GUIDE;
D O I
10.3788/LOP240951
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
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.
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页数:6
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