Semiconductor Optoelectronics, Volume. 45, Issue 5, 693(2024)
Slow-wave High-speed Electro-optic Modulator Based on Barium Titanate on An Insulator at A Wavelength of 2 μm
Electro-optic modulators are critical components of optical communication systems. With an increasing demand for the near-infrared spectrum in optical communication, the 2 μm mid-infrared band has emerged as a promising option for expanding the bandwidth of fiber optic communications. This study proposes a mid-infrared electro-optic modulator based on barium titanate on an insulator platform at a wavelength of 2 μm. Theoretical analyses and structural optimizations are performed on the barium titanate ridge waveguide and slow-wave electrode. The simulation results demonstrate that at a wavelength of 2 μm and a modulation length of 5 mm, the designed electro-optic modulator exhibits high modulation efficiency and achieves a large electro-optic bandwidth, with a half-wave voltage-length product (Vπ·L) of 0.677 V·cm and a 3 dB electro-optic bandwidth of 229.6 GHz.
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HUANG Tong, MA Ruyuan, LIU Yingxuan, XU Tianqi, QIU Yang, ZHAO Xingyan, ZHENG Shaonan, ZHONG Qize, DONG Yuan, HU Ting. Slow-wave High-speed Electro-optic Modulator Based on Barium Titanate on An Insulator at A Wavelength of 2 μm[J]. Semiconductor Optoelectronics, 2024, 45(5): 693
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Received: Apr. 28, 2024
Accepted: Feb. 13, 2025
Published Online: Feb. 13, 2025
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