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Your search keyword '"Zhuang, Chijie"' showing total 9 results
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9 results on '"Zhuang, Chijie"'

7. Large-dynamic-range athermal lithium niobite on insulator/ TiO2 nanobeam electric field sensor.

Author

Ma, Xinyu, Zhuang, Chijie, Zeng, Rong, and Zhou, Weidong

Subjects
*TITANIUM dioxide, *THERMO-optical effects, *PERMITTIVITY, *PHOTONIC crystals, *QUALITY factor
Abstract

An integrated optical electric field (E-field) sensor based on a one-dimensional photonic crystal nanobeam cavity on a lithium niobite on insulator (LNOI) platform is reported here. It has a large dynamic range and extreme sensitivity. The dielectric resonant mode has a quality factor Q ≳ 105. The waveguide-coupled structure, only 25 μm long, is beneficial for future on-chip integration. The use of TiO2 compensates for the thermo-optical effect of lithium niobite (LN), while the high dielectric constant of TiO2 influences the E-field distribution. A tri-layer TiO2/LNOI/TiO2 nanobeam structure is proposed to improve electro-optical modulation efficiency in LN. Detailed analysis of noise sources shows the theoretical minimum detectable E-field to be 0.15 V m−1 with a dynamic range of 83 dB. The temperature-induced resonant wavelength variation is within 3 pm °C−1 in the range of −40 °C to 40 °C. [ABSTRACT FROM AUTHOR]

Published
2021
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