Results 21 to 30 of about 7,248,704 (282)

A Large Area Fiber Optic Gyroscope on multiplexed fiber network [PDF]

, 2013
We describe a fiber optical gyroscope based on the Sagnac effect realized on a multiplexed telecom fiber network. Our loop encloses an area of 20 km2 and coexists with Internet data traffic.
LEVI, FILIPPO, G. A. Costanzo, Levi, F., Costanzo, Giovanni Antonio, A. Mura, Pizzocaro, Marco, CALONICO, DAVIDE, M. Pizzocaro, D. Calonico, Clivati, Cecilia, Calonico, D., C. Clivati, F. Levi, Mura, A.   +13 more
core   +1 more source

Full duplex 60 GHz millimeter wave transmission over multi-mode fiber [PDF]

, 2010
Copyright @ 2010 IEEENew wireless subscribers are signing up at an increasing demand of more capacity for ultra-high data rate transfers at speeds more than 1 Gbps, while the radio spectrum is limited. Millimeter wave communication system offers a unique
M. Kamarei, Nilavalan, R, H.S. Al-Raweshidy, Abdollahi, SR, Kamarei, M, S. R. Abdollahi, Al-Raweshidy, H, S. Mehdi Fakhraie, R. Nilavalan, Fakhraie, SMB   +9 more
core   +1 more source

A comparative study of the performance of seven- and 63-chip optical code-division multiple-access encoders and decoders based on superstructured fiber Bragg gratings [PDF]

, 2001
We report a range of elementary optical coding and decoding experiments employing superstructured fiber Bragg grating (SSFBG) components: first, we perform a comparative study of the relative merits of bipolar and unipolar coding: decoding schemes and ...
Teh, Peh Chiong, Ibsen, M., Petropoulos, P., Richardson, D.J.   +3 more
core   +1 more source

Optical fiber sensing based on reflection laser spectroscopy [PDF]

, 2010
An overview on high-resolution and fast interrogation of optical-fiber sensors relying on laser reflection spectroscopy is given. Fiber Bragg-gratings (FBGs) and FBG resonators built in fibers of different types are used for strain, temperature and ...
De Natale, Paolo, Ralph P. Tatam, Chow, Jong H., Jong H. Chow, Mario Salza, Ballard, Nicholas, Gangopadhyay, Tarun, Paz-Soldan, Daniel, Tatam, Ralph, Ferarro, Pietro, Lam, Timothy T. -Y., Lam, Timothy T-Y, Gianluca Gagliardi, Barnes, Jack A., Daniel Paz-Soldan, Gangopadhyay, Tarun Kumar, Tatam, Ralph P., Chow, Jong, Pietro Ferraro, Tarun K. Gangopadhyay, Jack A. Barnes, Loock, Hans-Peter, Edmond Chehura, Paolo De Natale, Gangopadhyay, Tarun K., Salza, Mario, Ferraro, Pietro, Hans-Peter Loock, Nicholas Ballard, Barnes, Jack, Chehura, Edmon, Gagliardi, Gianluca, Timothy T.-Y. Lam, Lam, Timothy, Chehura, Edmond   +34 more
core   +1 more source

L-Band GHz Femtosecond Passively Harmonic Mode-Locked Er-Doped Fiber Laser Based on Nonlinear Polarization Rotation

IEEE Photonics Journal, 2019
Via using an L-band optimized in-fiber polarizing grating device, a GHz L-band femtosecond passively harmonic mode-locked Er-doped fiber laser based on nonlinear polarization rotation is first demonstrated.
Yuanda Ling, Qianqian Huang, Chuanhang Zou, Zhikun Xing, Zhijun Yan, Chang Zhao, Kaiming Zhou, Lin Zhang, Chengbo Mou   +8 more
doaj   +1 more source

Recent progress of dynamic mode manipulation via acousto-optic interactions in few-mode fiber lasers: mechanism, device and applications

Nanophotonics, 2020
The burgeoning advances of spatial mode conversion in few-mode fibers emerge as the investigative hotspot in novel structured light manipulation, in that, high-order modes possess a novel fundamental signature of various intensity profiles and unique ...
Lu Jiafeng, Shi Fan, Xu Jiangtao, Meng Linghao, Zhang Longkun, Cheng Peikang, Zhou Xuan, Pang Fufei, Zeng Xianglong   +8 more
doaj   +1 more source

Optical fiber fabrication using novel gas-phase deposition technique [PDF]

, 2011
We report a highly versatile chemical-in-crucible preform fabrication technique suitable for gas-phase deposition of doped optical fibers. Aluminosilicate and ytterbium-doped phosphosilicate fibers are presented demonstrating the technique and its ...
David J. Richardson, Mountfort, F.H., Jayanta K. Sahu, Richardson, D.J., Mridu P. Kalita, Boyland, A.J., Webb, A.S., David N. Payne, Yoo, S., Payne, D.N., Kalita, M.P., Alexander J. Boyland, Francesca H. Mountfort, Robert J. Standish, Standish, R.J., Andrew S. Webb, Sahu, J.K., Seongwoo Yoo   +17 more
core   +1 more source

Monitoring Junction Temperature of RF MOSFET under Its Working Condition Using Fiber Bragg Grating

Micromachines, 2022
When a high-power radio frequency (RF) metal oxide semiconductor field effect transistor (MOSFET) works in low-efficiency situations, considerable power is dissipated into heat, resulting in an excessive junction temperature and a likely failure. In this
Zhenmin Liu, Na Chen, Yong Liu, Zhenyi Chen, Fufei Pang, Tingyun Wang   +5 more
doaj   +1 more source

Performance optimization of free-space optical communication protocols based on results from FSO demonstrations [PDF]

, 2007
The mobile free-space optical channel mainly suffers from relatively long link outages, produced by short-term blockings of the line-of-sight (obstacles, clouds), pointing- and tracking-errors or deep signal-fades caused by index of refraction turbulence
Bernhard Epple, Epple, Bernhard
core   +1 more source

High Throughput Priority-Based Layered QC-LDPC Decoder with Double Update Queues for Mitigating Pipeline Conflicts

Sensors, 2022
A high-throughput layered decoder for quasi-cyclic (QC) low-density parity-check (LDPC) codes is required for communication systems. The preferred way to improve the throughput is to insert pipeline stages and increase the operating frequency, which ...
Yunfeng Li, Yingchun Li, Nan Ye, Tianyang Chen, Zhijie Wang, Junjie Zhang   +5 more
doaj   +1 more source