Results 51 to 60 of about 423,477 (202)

Simplified quantum logic with trapped ions

, 1996
We describe a simplified scheme for quantum logic with a collection of laser-cooled trapped atomic ions. Building on the scheme of Cirac and Zoller, we show how the fundamental controlled-NOT gate between a collective mode of ion motion and the internal ...
Itano, W. M., King, B. E., Leibfried, D., Meekhof, D. M., Monroe, C., Wineland, D. J.   +5 more
core   +2 more sources

ATMOSPHERIC LASER COMMUNICATION

Bulletin of the American Meteorological Society, 2004
Atmospheric laser communication, often referred to as free-space optics (FSO) or free-space laser (FSL) communication, is similar to fiber optic cable in terms of carrier wavelength and bandwidth capability, but data are transmitted directly through the atmosphere via laser beams over paths from a few meters to 4 km or longer.
Fischer, Kenneth W., Witiw, Michael R., Baars, Jeffrey A., Oke, Timothy R.   +3 more
openaire   +2 more sources

Experimental investigation of the impact of optical injection on vital parameters of a gain-switched pulse source [PDF]

, 2007
An analysis of optical injection on a gain-switched distributed feedback (DFB) laser and its impact on pulse parameters that influence the performance of the pulse source in high-speed optical communication systems is presented in this paper.
A. Clarke, Ahmed, Anandarajah, Anandarajah, Annovazzi-Lodi, Barry, Barry, Barry, Barry, Barry, Bottcher, C. Guignard, Chrostowski, Daza, Dudley, Eggleton, Gunning, Hansen, Jinno, Kaiser, L.P. Barry, Lau, Liu, Liu, Matsui, Mohrdiek, Nogiwa, O. Vaudel, P. Besnard, P.M. Anandarajah, Saruwatari, Seo, Spirit, Suzuki, Trebino, Turkiewicz, Wiesenfeld   +36 more
core   +3 more sources

Research on the Initial Orientation Technology of the View Axis for Underwater Laser Communication Dynamic Platforms Based on Coordinate Transformation Matrix Positioning Model

Photonics
To address the challenge of directly applying space laser communication systems to dynamic underwater environments, this paper integrates coordinate transformation matrices with underwater positioning systems, proposing an ultra-short baseline (USBL ...
Jun Ma, Yunjie Teng, Yang Liu, Mingyang Zhang, Cheng Qiu, Hao Qin, Yanpu Li   +6 more
doaj   +1 more source

Improved performance of a hybrid radio/fiber system using a directly modulated laser transmitter with external injection [PDF]

, 2002
A directly modulated laser diode with external light injection is used to generate microwave optical signals for a hybrid radio/fiber system. The external light injection greatly enhances the frequency response of the laser, and thus, significantly ...
Anandarajah, Prince M., Barry, Liam P., Kaszubowska-Anandarajah, Aleksandra   +2 more
core   +1 more source

Study on the Influence of Atmospheric Light Intensity Scintillation Effect on Optical Fiber Coupling Efficiency

Photonics
Light intensity flicker is the most basic and important effect of turbulence. Fiber coupling efficiency is the primary parameter that ensures the system’s communication quality.
Xiaoying Ding, Xin Zhao
doaj   +1 more source

The Optimization Design of Sub-Regions Scanning and Vibration Analysis for Beaconless Spatial Acquisition in the Inter-Satellite Laser Communication System

IEEE Photonics Journal, 2018
We mainly report an efficient approach to optimize the design of beaconless spatial laser acquisition. In order to analyze the influence of vibration environment on the beaconless spatial acquisition, a demonstration of an efficient method will be ...
Yunjie Teng, Min Zhang, Shoufeng Tong
doaj   +1 more source

A Dual-Wavelength Ocean Lidar for Vertical Profiling of Oceanic Backscatter and Attenuation

Remote Sensing, 2020
Ocean water column information profiles are essential for ocean research. Currently, water column profiles are typically obtained by ocean lidar instruments, including spaceborne, airborne and shipborne lidar, most of which are equipped with a 532 nm ...
Kaipeng Li, Yan He, Jian Ma, Zhengyang Jiang, Chunhe Hou, Weibiao Chen, Xiaolei Zhu, Peng Chen, Junwu Tang, Songhua Wu, Fanghua Liu, Yuan Luo, Yufei Zhang, Yongqiang Chen   +13 more
doaj   +1 more source

Satellite Laser Communication

, 2010
We applied Chu and Hogg’s key cloud attenuation results to Italsat observations (9) and cloud water analysis (11) to estimate worldwide laser attenuation for satellite- ground communication links. Section 3 gave worldwide zenith attenuation estimates for 80% availability, 90% availability, and 70% availability.
openaire   +3 more sources

Satellite Downlink Coherent Laser Communications

, 2016
Peer ...
Belmonte Molina, Aniceto, Kahn, J. M.
openaire   +3 more sources