Hong-Jie GUO, Hai-Feng LIU, Zhen-Nuo WANG, Man-Qing TAN, Zhi-Yong LI, Ming Lei, Wen-Tao GUO. Design of a novel Y-junction electro-optic modulator based on thin film lithium niobite[J]. Journal of Infrared and Millimeter Waves, 2022, 41(3): 626
- Journal of Infrared and Millimeter Waves
- Vol. 41, Issue 3, 626 (2022)
Fig. 1. （a）The schematic diagram of the TFLN PM，（b）the cross section of the TFLN PM
Fig. 2. （a）The Vπ of conditional bulk PM various G at different modulation length，where Γ = 0.5，（b）the Vπ of TFLN PM various b2 at different modulation length， where Γ = 0.9，b1=5 μm
Fig. 3. （a）The sketch of Y-junction waveguide，（b）the W of Y-junction waveguide versus L2 at different α
Fig. 4. （a）The results of BPM simulation，（b）the refractive index profile of waveguide section，（c）the power distribution of Y-junction waveguide
Fig. 5. The results of simulation modulator insertion loss，where L1=1 000 μm，L2=9 000 μm，L3=10 000 μm，α=0.6°
Fig. 6. The microscope image of the cross-section of the TFLN slab bonded on the LN substrate
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