Development and Assessment of the New Generation Rare-Earth Doped Optical Fiber Amplifiers

The fluorescence and up-conversion spectral properties of Er3+-doped TeO2-ZnO and TeO2-ZnO-PbCl2 glasses suitable for developing optical fiber amplifier and laser have been fabricate and characterized. Strong green (around 527-550 nm) and red (around 661 nm) up-conversion emissions under 977 nm laser diode excitation were investigated, corresponding to 2H11/2, 4S3/2, ® 4I15/2 and 4F9/2 ® 4I15/2 transitions of Er3+ ions respectively, have beenobserved and the involved mechanisms have been explained. The dependence of up-converted fluorescence intensity versus laser power confirm that two-photons contribute to up-conversion of the green-red emissions. The novelty of this kind of optical material has been its ability in resisting devitrification, and its promising optical properties strongly encourage for their further development as the rare-earth doped optical fiber amplifiers and upconversion fiber laser systems.

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Optical fiber amplifiers

Introduction to fiber optics ◽

10.1017/cbo9781139174770.015 ◽

2013 ◽

pp. 281-322 ◽

Cited By ~ 2

Author(s):

Ajoy Ghatak ◽

K. Thyagarajan

Keyword(s):

Optical Fiber ◽

Fiber Amplifiers ◽

Optical Fiber Amplifiers

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

Journal of Optical Communications ◽

10.1515/joc-2019-0153 ◽

2019 ◽

Vol 0 (0) ◽

Author(s):

I. S. Amiri ◽

Fatma Mohammed Aref Mahmoud Houssien ◽

Ahmed Nabih Zaki Rashed ◽

Abd El-Naser A. Mohammed

Keyword(s):

Optical Fiber ◽

Optical Networks ◽

Wavelength Division Multiplexing ◽

Performance Optimization ◽

Input Power ◽

Fiber Amplifiers ◽

Q Factor ◽

Wavelength Division ◽

Transmission Distance ◽

Optical Fiber Amplifiers

AbstractThe 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)). The DWDM systems were implemented for 5 Gb/s channel speed using one of these configurations with 100 GHz channel spacing and 25 km amplifying section. The hybrid configurations are the combinations of (PIN + EDFA), (PIN + RAMAN), (PIN + SOA), (APD(Si) + EDFA), (APD(Si) + RAMAN), (APD(Si) + SOA), (APD(InGaAs) + EDFA), (APD(InGaAs) + RAMAN) and (APD(InGaAs) + SOA). Based on BER, Q-factor and eye diagrams, the performance was compared for these configurations under influences of various thermal noise levels of photodetectors over different fiber lengths ranging from 25 km up to 150 km. The results revealed that both APD structures give optimum performance at input power Pin = 5 dBm due to high internal avalanche gain. EDFA outperforms RAMAN and SOA amplifiers. SOA amplifier shows degraded performance because of nonlinearity effects induced. RAMAN amplifier seems to be the best alternative for long reach DWDM systems because it minimizes the effects of fiber nonlinearities. The configuration (APD(Si) + EDFA) is the most efficient and recommended to be used for transmission distance beyond 100 km due to its larger Q-factor.

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