Results 1 to 10 of about 221,734 (291)

Telecommunication Network Security [PDF]

, 2015
YesOur global age is practically defined by the ubiquity of the Internet; the worldwide interconnection of cyber networks that facilitates accessibility to virtually all ICT and other elements of critical infrastructural facilities, with a click of a ...
Abd-Alhameed, Raed, Adeka, Muhammad I., Shepherd, Simon J.   +2 more
core   +2 more sources

Terfenol-D Based Magnetic Field Sensor With Temperature Independence Incorporating Dual Fiber Bragg Gratings Structure

IEEE Access, 2021
A magnetic field sensor with temperature insensitivity implemented by two fiber Bragg gratings (FBGs) structure is presented and experimentally demonstrated.
Biyan Zhan, Tigang Ning, Li Pei, Jing Li, Ling Liu, Xuekai Gao, Jian Xu, Jingjing Zheng, Jianshuai Wang, Bo Ai   +9 more
doaj   +1 more source

Smart antenna with automatic beam switching for mobile communication

EURASIP Journal on Wireless Communications and Networking, 2020
A new kind of smart antenna capable of automatically switching its main beam to track a moving target is presented. The antenna, which is suitable for mobile communication in long straight spaces, such as railways or highways, integrates a sensing ...
Yuchen Ma, Junhong Wang, Yujian Li, Meie Chen, Zheng Li, Zhan Zhang   +5 more
doaj   +1 more source

Interval-Adjustable Multi-Wavelength Erbium-Doped Fiber Laser With the assistance of NOLM or NALM

IEEE Access, 2021
A novel interval-adjustable multi-wavelength erbium-doped fiber laser (EDFL) is experimentally demonstrated in this paper. The proposed EDFL is based on the cascaded structure of two-segment Sagnac filter and nonlinear optical loop mirror (NOLM).
Qi Zhao, Li Pei, Jianshuai Wang, Yuheng Xie, Zuliang Ruan, Jingjing Zheng, Jing Li, Tigang Ning   +7 more
doaj   +1 more source

Telecommunications networks [PDF]

Competition and Regulation in Network Industries, 2013
This article assesses the innovation policy objectives underlying the proposed European Union (EU) Telecom Single Market regulation considering disruptive technological developments. The article explores the network operator’s dilemma how to deal with investments in a time where fundamental innovation comes from outside and the regulator’s dilemma how ...
openaire   +3 more sources

Validation of the Parlay API through prototyping [PDF]

, 2001
The desire within the telecommunications world for new and faster business growth has been a major drive towards the development of open network API.
Hellenthal, J.W., Planken, F.J.M., Wegdam, M.   +2 more
core   +7 more sources

Dual-Beam Leaky-Wave Antenna Array With Capability of Fixed-Frequency Beam Switching

IEEE Access, 2020
A novel fixed-frequency beam switchable dual-beam antenna array is presented, which consists five dual-beam leaky-wave antenna (LWA) elements designed on substrate integrated waveguide (SIW) and integrated together on a common substrate. The LWAs work on
Xiaowen Li, Junhong Wang, Zheng Li, Yujian Li, Meie Chen, Zhan Zhang   +5 more
doaj   +1 more source

Segmented Cladding Fiber With a High-Index Ring in Core for Wideband Single-Mode Operation in Any Bending Orientation

IEEE Photonics Journal, 2021
A resonant-ring-assisted large mode area segmented cladding fiber (RR-SCF) with a high-index ring in the core is proposed. Numerical investigations of the effects of the high-index ring on the leakage losses of guiding modes, mode area, and electric ...
Z. Guo, L. Pei, T. Ning, J. Zheng, J. Li, J. Wang   +5 more
doaj   +1 more source

Photonic Generation of Triangular-Shaped Waveform With Tunable Symmetry Factor Based on Two Single-Drive Mach-Zehnder Modulator

IEEE Photonics Journal, 2020
An approach to generating triangular-shaped waveform with variable symmetry based on two single-drive Mach-Zehnder Modulator is proposed and analyzed. By setting the bias state of modulators, the rotation angle of polarization controller, phase shift of ...
Chuangye Wang, Tigang Ning, Jing Li, Li Pei, Jingjing Zheng, Guobin Ren, Beilei Wu, Xiaowei Dong   +7 more
doaj   +1 more source

Gain Characteristics of Few-Mode EDFA With Different Pump

IEEE Photonics Journal, 2022
Few-mode erbium-doped fiber amplifier (FM-EDFA) is a key device to achieve power compensation in long-haul mode division multiplexing (MDM) optical system.
Wenxuan Xu, Li Pei, Jianshuai Wang, Jingjing Zheng, Zhiqi Li, Tigang Ning, Li Jing, Guobin Ren   +7 more
doaj   +1 more source