Results 21 to 30 of about 423,477 (202)
Sensors, 2022 Time-to-digital converter (TDC) is the key technology to realize accurate time delay measurement in high-precision optical fiber time-frequency transmission and synchronization, optical sensing and many scientific applications.
Xiangyu Mao +5 more
doaj +1 more source
Low Power FPGA Implementation of a Smart Building Free Space Optical Communication System
Photonics, 2022 Free Space Optical (FSO) communication systems have extensively invaded the speed of smart city evolution due to the current surge in demand for wireless communication spots that can match recent challenges due to high technical leaps in smart city ...
Rehab Ali +4 more
doaj +1 more source
Narrow line width frequency comb source based on an injection-locked III–V-on-silicon mode-locked laser [PDF]
, 2016 In this paper, we report the optical injection locking of an L-band (similar to 1580 nm) 4.7 GHz III-V-on-silicon mode-locked laser with a narrow line width continuous wave (CW) source. This technique allows us to reduce the MHz optical line width of the
Duan, Guang-Hua +5 more
core +1 more source
Laser Application and Sparse Imaging Analysis of Diffractive Optical System
Leida xuebao, 2020 In recent years, the diffractive optical systems have developed rapidly. Diffractive devices such as binary optical device and membrane-based lens are equivalent to fixed phase shifters of microwave antennas.
LI Daojing +6 more
doaj +1 more source
Based on adaptive modulation laser communication multi-microgrids scheduling system
Frontiers in Physics, 2023 In order to improve the data sharing and comprehensive information processing capabilities between multi-microgrids in the power system, the multi-microgrids scheduling system based on laser communication has been proposed.
Ying Chang, Dajun Chang, Li Su
doaj +1 more source
Applied Sciences, 2019 In this study, Zernike polynomials and optical fiber field theory are applied to build a mathematical model of coupling efficiency (CE) and spatial mode of aberrations.
Yongkai Liu +6 more
doaj +1 more source
Laser microsampling of soil microbial community [PDF]
Journal of Biological Engineering, 2018 Standard microorganism isolating technology applied for complex multiphase environmental samples such as soil or sediment needs pre-treatment steps to remove living cells from their mixed-phase microniche, by creating a liquid-phase sample. This process removes synergetic relationships, which help to maintain viability of yet-to-be-cultured and hard-to-
M. V. Gorlenko +13 more
openaire +3 more sources
Research on underwater wireless dynamic optical communication system based on PPM modulation
Frontiers in Physics, 2023 In order to achieve underwater wireless dynamic optical communication, a laser communication system is proposed based on Pulse Position Modulation (PPM).
Bing Dong +3 more
doaj +1 more source
Synchronised laser chaos communication: statistical investigation of an experimental system [PDF]
, 2017 The paper is concerned with analyzing data from an experimental antipodal laser-based chaos shift-keying communication system. Binary messages are embedded in a chaotically behaving laser wave which is transmitted through a fiber-optic cable and are ...
Lawrance, Anthony J. +2 more
core +1 more source
Experiment of Suppressing Atmospheric Turbulence by Using Fast-Steering Mirror
Applied SciencesWith the aim of addressing the problem of spot drift caused by laser transmission in atmospheric turbulence, the effects of different weather conditions such as sunny, cloudy, rainy and sandstorm conditions on spot drift were measured at 0.42 km, 2 km ...
Yingmin Yuan, Xizheng Ke, Rui Wang
doaj +1 more source