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Showing 1 to 12 of 12 for “"Lithium niobate (LiNbO3)"”.
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Design, fabrication, and characterization of lithium niobate whispering-gallery-mode microdisk and microring resonators and grating couplers
Lithium niobate (LiNbO3) is becoming popular in microelectronics and photonics research due to its exciting physical properties. Properties such as large electro-optic and piezoelectric coefficients make lithium niobate an excellent material for RF-photonics platforms that require center frequency …
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Design, fabrication, and characterization of a lithium niobate optomechanical photodetector based on released whispering-gallery-mode microdisk resonators
Lithium Niobate (LiNbO3) is a piezoelectric material that also exhibits promising optical characteristics such as low optical loss and high electro-optic coefficient, making it an interesting choice for Radio Frequency (RF) micro-opto-electro-mechanical systems (MOEMS) and devices, electro-optical …
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Generation, manipulation and detection of NIR and MIR entangled photon pairs
… I exploited a bulk nonlinear crystal, namely lithium niobate (LiNbO3), which has a well-known sizeable χ(2) nonlinearity.
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Design and fabrication of a recycled carrier modulator
… to achieve a Distributed Bragg Gratings on a Lithium Niobate (LiNbO3) based substrate. These gratings function as wavelength selective mirrors and help create a Fabry-Perot resonator topology for recycling an optical carrier wave. First and foremost, the choice of material was made bearing in …
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Super-high-frequency lithium niobate microelectromechanical system resonators
… (A1) mode in ion-sliced and suspended Z-cut lithium niobate (LiNbO3) thin films, which feature a phase velocity exceeding 10,000 m/s. The fabricated device has demonstrated a high electromechanical coupling (kt2) of 29% and a high quality factor (Q) of 527 simultaneously. Hence, this work …
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DIRECT VOLTAGE MEASUREMENTS USING BULK ACOUSTIC WAVES IN LiNbO3
… crystal-based bulk acoustic wave sensor using lithium niobate (LiNbO3) that has applications to metrology, research, and power metering was developed to overcome these measurement issues with the factors of scalability, ease of use, and compactness in mind. A Y+36° cut LiNbO3crystal was coupled …
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Advancing acoustic filters for 5G front-ends: Lithium niobate piezoelectric MEMS resonators and filters
… (A1) Lamb wave mode in the Z-cut and Y-cut lithium niobate (LiNbO3) thin films. The fabricated devices based on Z-cut LiNbO3 demonstrated an electromechanical coupling (kt2) of 30%, which is more than three times of current commercial solutions. The fabricated devices based on Y-cut LiNbO3 …
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Optimization and design of radio frequency piezoelectric MEMS resonators
… of resonator-based filters. Chapter 7 proposes lithium niobate (LiNbO3) multilayered resonators with large electromechanical coupling, structure robustness, and good temperature stability. The analysis of Bragg reflectors, resonator simulation, stress control, fabrication, and measurements are …
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Ultra-wideband Spread Spectrum Communications using Software Defined Radio and Surface Acoustic Wave Correlators
… Each SAW correlator device was fabricated on lithium niobate (LiNbO3) with fractional bandwidths in excess of 20%. The SAW correlator device presented for use in system was implemented with a center frequency of 491.52 MHz; matching SDR transmit frequency. Parasitic electromagnetic feedthrough …
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Organic Self-Assembled Thin Films for Second Order Nonlinear Optics
… electro-optic coefficient comparable to that of lithium niobate (LiNbO₃). At fixed deposition time and concentration conditions, the presence of convection had little demonstrated effect on films with deposition times shorter than 2 minutes. For the 5 minute case, the presence of convection …
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Lithium niobate RF-MEMS oscillators for IoT, 5G and beyond
… focuses on the design and implementation of lithium niobate (LiNbO3) radiofrequency microelectromechanical (RF-MEMS) oscillators for internet-of-things (IoT), 5G and beyond. The dissertation focuses on solving two main problems found nowadays in most of the published works: the narrow tuning …
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Carrier manipulation in graphene/ferroelectric hybrid structures
The combination of two novel classes of functional materials with exciting prospects for future nanoelectronic applications, i.e. carbon nanoelectronics and complex oxide thin film electronics, is expected to lead to a range of new phenomena being accessible for observation, scientific …