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9 March 2024 BaTiO3-based electro-optic single-sideband modulator for atomic gravimeter
Young-Uk Jeon, Geunpil Kim, Kwanil Lee, JoonHyun Kang, Jongbum Kim
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Proceedings Volume PC12882, Optical Components and Materials XXI; PC128820H (2024) https://doi.org/10.1117/12.3001332
Event: SPIE OPTO, 2024, San Francisco, California, United States
Abstract
BaTiO3 (BTO) has emerged as an electro-optic (EO) material in integrated photonics, offering advantages over traditional materials such as LiNbO3 due to larger Pockels coefficients. BTO thin films on oxide substrates have been extensively studied for on-chip EO modulators that manipulate light properties in waveguides. One application is in compact laser systems for atomic gravity sensors, where BTO-based single-sideband (SSB) modulators reduce cost and power consumption by suppressing sidebands. This research presents the fabrication of an SSB modulator using BTO film on MgO substrate, operating at 780 and 1560 nm wavelengths. The modulator uses a Mach-Zehnder interferometer to convert a 1560 nm light source into a 6.8 GHz optical signal. This work advances integrated photonics by exploring the potential of BTO in compact laser systems for atomic gravity sensors.
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Young-Uk Jeon, Geunpil Kim, Kwanil Lee, JoonHyun Kang, and Jongbum Kim "BaTiO3-based electro-optic single-sideband modulator for atomic gravimeter", Proc. SPIE PC12882, Optical Components and Materials XXI, PC128820H (9 March 2024); https://doi.org/10.1117/12.3001332
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KEYWORDS
Electro optical sensors
Electro optics
Single sideband modulation
Electrooptic modulators
Integrated photonics
Laser systems engineering
Sensors
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