Coherent OTDR for Testing Optical Transmission Lines Containing In-Line Optical-Fiber Amplifiers

1996 ◽  
Author(s):  
Kaoru Itoh ◽  
Masanori Takizawa
Keyword(s):  
Optical Fiber ◽  
Transmission Lines ◽  
Optical Transmission ◽  
Fiber Amplifiers ◽  
Optical Fiber Amplifiers

Optical fiber amplifiers

2013 ◽  
pp. 281-322 ◽  
Author(s):  
Ajoy Ghatak ◽  
K. Thyagarajan
Keyword(s):  
Optical Fiber ◽  
Fiber Amplifiers ◽  
Optical Fiber Amplifiers

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

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.

scholarly journals Site-selective spectroscopy in dysprosium-doped chalcogenide glasses for 13-m optical-fiber amplifiers

2001 ◽  
Vol 18 (10) ◽  
pp. 1436 ◽  
Author(s):  
T. Schweizer ◽  
F. Goutaland ◽  
E. Martins ◽  
D. W. Hewak ◽  
W. S. Brocklesby
Keyword(s):  
Optical Fiber ◽  
Chalcogenide Glasses ◽  
Fiber Amplifiers ◽  
Optical Fiber Amplifiers ◽  
Site Selective

scholarly journals Polymer Optical Fiber Amplifiers and Lasers

Kobunshi ◽  
2003 ◽  
Vol 52 (10) ◽  
pp. 763-766
Author(s):  
Akihiro TAGAYA
Keyword(s):  
Optical Fiber ◽  
Fiber Amplifiers ◽  
Polymer Optical Fiber ◽  
Optical Fiber Amplifiers

Optical fiber amplifiers for optical amplitude-modulated vestigial sideband transmission systems

1993 ◽  
Vol 76 (5) ◽  
pp. 1-11
Author(s):  
Masayuki Shigematsu ◽  
Tomonori Kashiwada ◽  
Masayuki Nishimura ◽  
Hiroo Kanamori ◽  
Toshio Okitas
Keyword(s):  
Optical Fiber ◽  
Fiber Amplifiers ◽  
Transmission Systems ◽  
Optical Fiber Amplifiers
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