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Article
Optics
Fan Yang et al.
Summary: In this study, a high-performance and low-cost thin film lithium niobate electro-optic modulator was successfully fabricated using photolithography and wet etching techniques. The modulator demonstrated a large bandwidth, low half-wave voltage-length product, and high optical waveguide propagation loss.
CHINESE OPTICS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Jing Wang et al.
Summary: A heterogeneous silicon on lithium niobate (Si-LN) modulator is proposed to improve the compactness and modulating performance of large-scale photonic integrated circuits. Different configurations are employed for light-routing and light-modulating waveguides on the Si-LN wafer, with an analysis on the influence of LN thickness on performance. This modulator supports a bend radius of 10 mu m and edge-to-edge waveguide separation of 0.7 mu m with modulation efficiency reaching 1.76 V.cm and bandwidth exceeding 350 GHz when thickness of LN is 700 nm.
IEEE PHOTONICS JOURNAL
(2021)
Review
Optics
Di Zhu et al.
Summary: Lithium niobate is a versatile material that plays a significant role in daily life, particularly in the fields of optical communications and photonics. Thin-film lithium niobate integrated photonics is currently undergoing a revolution, enabling high-performance nanophotonic components such as optical modulators and nonlinear wavelength converters.
ADVANCES IN OPTICS AND PHOTONICS
(2021)
Article
Optics
Prashanta Kharel et al.
Summary: Thin-film lithium niobate modulators offer improved voltage-bandwidth performance but face challenges in high-frequency electro-optic performance due to increased microwave losses from reduced electrode gaps. By utilizing micro-structured electrodes, researchers achieved a record combination of low RF half-wave voltage (V-pi) of 1.3 V while maintaining electro-optic response with 1.8 dB roll-off at 50 GHz.
Article
Optics
Shaofu Xu et al.
Summary: Optical implementations of neural networks (ONNs) utilize the technical advantages of large bandwidth and high parallelism of optics for high-speed and energy-efficient deep learning computing. However, most existing ONNs are limited to basic classification tasks, making the study of deep learning regression essential for further development. The silicon-based optical coherent dot-product chip (OCDC) demonstrated is capable of completing deep learning regression tasks by operating in the complete real-value domain and reusing a single chip for matrix multiplications and convolutions in neural networks of any complexity.
LIGHT-SCIENCE & APPLICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Junming Cai et al.
Summary: This paper introduces a detailed design procedure for a silicon and lithium niobate hybrid integrated modulator based on a Mach-Zehnder interferometer push-pull configuration, with a multiphysics model proposed for the crossing section of the modulation section. The optimal ground-signal electrode gap value is found to be about 8-9 μm for the present modulator structure, achieving 3-dB bandwidths of up to 45 GHz and 137 GHz at half-wave voltages of 2 V and 4 V, respectively, for specific lithium niobate waveguide dimensions.
IEEE PHOTONICS JOURNAL
(2021)
Article
Optics
Xuecheng Liu et al.
Summary: A novel TFLN electro-optic modulator with a hybrid waveguide, capacitive loaded traveling-wave electrodes, and a quartz substrate has been proposed and demonstrated. This modulator shows low optical loss, low half-wave-voltage length product, and a high operating frequency with a 3.4 V half-wave voltage and less than 2 dB roll-off in an electro-optic response at 67 GHz.
CHINESE OPTICS LETTERS
(2021)
Review
Optics
Peter O. Weigel et al.
Summary: This article discusses the latest advancements in thin film lithium niobate electro-optic modulator technology, introduces a simplified simulation technique, and explores the feasibility of creating high-performance modulators.
JOURNAL OF PHYSICS-PHOTONICS
(2021)
Article
Engineering, Electrical & Electronic
Thach G. Nguyen et al.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2020)
Article
Optics
Abu Naim R. Ahmed et al.
Article
Optics
Amirmahdi Honardoost et al.
Article
Optics
Zejie Yu et al.
Review
Optics
David Marpaung et al.
Article
Multidisciplinary Sciences
Cheng Wang et al.
Article
Optics
Yichen Shen et al.
Review
Optics
Tadao Nagatsuma et al.
Review
Nanoscience & Nanotechnology
Chia Wei Hsu et al.
NATURE REVIEWS MATERIALS
(2016)
Article
Optics
Linfei Gao et al.
