Results 291 to 300 of about 1,780,396 (352)

Comparative Simulation Study of Multi Stage Hybrid All Optical Fiber Amplifiers in Optical Communications

Journal of optical communications, 2020
This study clarifies the comparison between hybrid all optical fiber amplifiers in single-stage and multi-stage amplification. EDFA/Raman, Raman/EDFA/Raman, and EDFA/Raman/EDFA configurations are employed for upgrading optical communication systems ...
I. Amiri, A. Rashed, P. Yupapin
semanticscholar   +1 more source

Bidirectional fiber amplifiers

IEEE Photonics Technology Letters, 1992
The authors propose new bidirectional erbium-doped fiber amplifier repeaters for bidirectional fiber networks and OTDR fault detection. At each repeater the counterpropagating signals are separated, amplified separately, and then recombined. Signal separation is done by directional couplers with intrinsic 6-dB coupling loss, or by optical circulators ...
Barnard, C.W., Chrostowski, J., Kavehrad, M.   +2 more
openaire   +2 more sources

Optical Networks Performance Optimization Based on Hybrid Configurations of Optical Fiber Amplifiers and Optical Receivers

Journal of optical communications, 2019
The 16-channels dense wavelength division multiplexing (DWDM) systems have been optimized by utilizing hybrid configurations of conventional optical fiber amplifiers (EDFA, RAMAN and SOA) and optical photodetectors (PIN, APD(Si) and APD(InGaAs)).
I. Amiri, F. M. A. M. Houssien, A. Rashed, A. Mohammed   +3 more
semanticscholar   +1 more source

Long span fiber amplifiers

Applied Optics, 1990
We examine the theory of optical amplification in long span single-mode fibers which have low levels of erbium dopant. When pumped from the transmitter end at a suitable wavelength, lightly doped fibers can form a distributed amplifier, capable of overcoming transmission losses due to the intrinsic attenuation of the host glass at the signal wavelength.
P, Urquhart, T J, Whitley
openaire   +2 more sources

Comparative study on transverse mode instability of fiber amplifiers based on long tapered fiber and conventional uniform fiber

Laser Physics Letters, 2019
Compared with conventional uniform fibers, long tapered fibers provide an effective way to maintain beam quality and suppress the generation of nonlinear effects in fiber lasers. In this work, the transverse mode instability (TMI) of two amplifiers based
Y. Ye, Xiaoming Xi, C. Shi, Baolai Yang, Xiao-lin Wang, Hanwei Zhang, P. Zhou, Xiaojun Xu   +7 more
semanticscholar   +1 more source

Rare-Earth-Doped Fiber Lasers and Amplifiers

Rare earth doped fibre fabrication - techniques and physical properties, Jay R. Simpson optical and electronic properties of rare earth ions in glasses, Wiliam J. Miniscalco devices and configurations for fibre laser sources and amplifiers, Paul Urquhart
M. Digonnet
semanticscholar   +1 more source

Fiber optical parametric amplifiers in optical communication systems [PDF]

Laser and Photonics Reviews, 2015
The prospects for using fiber optical parametric amplifiers (OPAs) in optical communication systems are reviewed. Phase-insensitive amplifiers (PIAs) and phase-sensitive amplifiers (PSAs) are considered.
Michel E Marhic, Peter A Andrekson, Periklis Petropoulos   +2 more
exaly   +2 more sources

Theoretical investigation on Raman Fiber Amplifiers

Asia Communications and Photonics Conference and Exhibition, 2010
The characterization of RFAs with bi-directional Raman pumped or co-propagating Raman pumped is studied. The effection to RFAs for pump power, initial signal power and fiber length is analyzed, which is to optimize and improve gain of RFASSs, so as to improve the performance of the amplifier.
Shuhua Li, Huaping Gong, Ying Meng, Yumeng Tu   +3 more
openaire   +1 more source

Fiber Amplifiers for SDM Systems

Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2013, 2013
Major advances made in both MCF and MMF amplification is presented here, including scaling up to 6 channels for MMF and up to 7 channels for MCF. EDFA and Raman based approaches and TDFA for PBGF are also demonstrated.
openaire   +2 more sources

Broadband Fiber Optic Amplifiers

Optical Fiber Communication Conference and International Conference on Quantum Information, 2001
Broadband fiber optic amplifiers are key elements of DWDM systems and enablers for optical networks. New amplifier technologies for extending gain-bandwidth and equalizing the power deviation among WDM signals are discussed toward the next generation of ultra.-high-capacity DWDM systems.
openaire   +1 more source