Results 21 to 30 of about 934 (185)

850/940-nm VCSEL for optical communication and 3D sensing

Opto-Electronic Advances, 2018
This paper is going to review the state-of-the-art of the high-speed 850/940-nm vertical cavity surface emitting laser (VCSEL), discussing the structural design, mode control and the related data transmission performance.
Cheng Chih-Hsien, Shen Chih-Chiang, Kao Hsuan-Yun, Hsieh Dan-Hua, Wang Huai-Yung, Yeh Yen-Wei, Lu Yun-Ting, Huang Chen Sung-Wen, Tsai Cheng-Ting, Chi Yu-Chieh, Kao Tsung Sheng, Wu Chao-Hsin, Kuo Hao-Chung, Lee Po-Tsung, Lin Gong-Ru   +14 more
doaj   +1 more source

Vertical Cavity Surface Emitting Laser Performance Maturing through Machine Learning for High-Yield Optical Wireless Network

Micromachines, 2022
The high-yield optical wireless network (OWN) is a promising framework to strengthen 5G and 6G mobility. In addition, high direction and narrow bandwidth-based laser beams are enormously noteworthy for high data transmission over standard optical fibers.
Ammar Armghan, Khaled Aliqab, Farman Ali, Fayadh Alenezi, Meshari Alsharari   +4 more
doaj   +1 more source

650-nm vertical-cavity surface-emitting lasers (VCSELs) for plastic optical fiber communication

Optics Express, 2023
Vertical-cavity surface-emitting lasers (VCSELs) are widely used as light sources for high-speed communications. This is mainly due to their economical cost, high bandwidth, and scalability. However, efficient red VCSELs with emissions at 650 nm are required for plastic optical fiber (POF) technology because of the low-loss transmission window centered
Nawal Almaymoni, Omar Alkhazragi, Chun Hong Kang, Georgian Melinte, Tien Khee Ng, Boon S. Ooi   +5 more
openaire   +3 more sources

Low Thermal Crosstalk 808-nm VCSEL Arrays With Nonlinear Mesa Configuration

IEEE Photonics Journal, 2018
In this paper, we demonstrated vertical-cavity surface-emitting laser (VCSEL) arrays with improved thermal stability by arranging the mesa distribution within the array in a nonlinear configuration.
Chuyu Zhong, Xing Zhang, Werner Hofmann, Yongqiang Ning, Lijun Wang   +4 more
doaj   +1 more source

Image Transmission Based on Spiking Dynamics of Electrically Controlled VCSEL-SA Neuron

Photonics, 2021
Based on the spiking dynamics of the electrically controlled vertical-cavity surface-emitting laser with an embedded saturable absorber (VCSEL-SA), we propose an image transmission system using two unidirectionally coupled VCSEL-SAs and numerically ...
Min Ni, Xiaodong Lin, Xi Tang, Ziye Gao, Luyao Xiao, Jun Wang, Fan Ma, Qiulan Zheng, Tao Deng   +8 more
doaj   +1 more source

Optical tuning of vertical-cavity surface-emitting laser side-pumped neodymium-doped yttrium aluminum garnet laser cavity

High Power Laser Science and Engineering
High-power 808 nm vertical-cavity surface-emitting laser (VCSEL) chips have unique characteristics for neodymium-doped yttrium aluminum garnet (Nd:YAG) laser pumping compared with conventional edge-emitting laser bars, including a chip surface with high ...
Yang Li, Chuanchuan Li, Xiaolang Qiu, Chongxian Yuan, Yongli Wang, Xin Wei, Lianghui Chen   +6 more
doaj   +1 more source

What is next for LLMs? Pushing the boundaries of next-gen AI computing hardware with photonic chips. [PDF]

Nanophotonics
Abstract Large language models (LLMs) are rapidly pushing the limits of contemporary computing hardware. For example, training GPT‐3 has been estimated to consume around 1,300 MWh of electricity, and projections suggest future models may require city‐scale (gigawatt) power budgets.
Li R, Xin Q, Wei W, Mao S, Ma E, Chen Z, Gao J, Zhang M, Li H, Zhang Z.   +9 more
europepmc   +2 more sources

Number of Quantum Well(s) Effects on GaN-Based VCSELs [PDF]

Engineering and Technology Journal, 2011
Advanced numerical simulation program was used to analyze the performance of GaN based vertical cavity surface emitting laser (VCSEL) with single, double and triple quantum well(s) as active region.
Farah Z. Jasim
doaj   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source