scholarly journals Optical Fiber Amplifiers and Their Applications. Hybrid Er-Doped Fiber Amplifiers for Wavelength-Division Multiplexing Transmission Systems.

1997 ◽  
Vol 25 (2) ◽  
pp. 158-163
Author(s):  
Motoki KAKUI ◽  
Tomonori KASHIWADA ◽  
Koji NAKAZATO ◽  
Masashi ONISHI ◽  
Masayuki SHIGEMATSU ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Wavelength Division Multiplexing ◽  
Fiber Amplifiers ◽  
Transmission Systems ◽  
Wavelength Division ◽  
Optical Fiber Amplifiers ◽  
Er Doped

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.

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

IMPACT OF OPTICAL FIBER AMPLIFIERS ON HIGH-SPEED LIGHTWAVE SYSTEMS AND WDM OPTICAL NETWORKS

1992 ◽  
Vol 03 (03n04) ◽  
pp. 363-386
Author(s):  
CHINLON LIN
Keyword(s):  
Optical Fiber ◽  
Optical Networks ◽  
High Speed ◽  
Fiber Amplifiers ◽  
Optical Channel ◽  
Long Distance ◽  
Transmission Systems ◽  
Optical Signals ◽  
Optical Fiber Amplifiers ◽  
Very High

Significant advances in the technologies of optical fiber amplifiers have led to important applications in both very-high-speed long-distance lightwave transmission systems and broadband optical distribution networks. Optical fiber amplifiers can amplify optical signals at very high speeds (10–100 Gb/s) as well as multiple optical signals (10–100 optical channels) over a relatively wide spectral range. The combination of these two unique capabilities of optical fiber amplifiers makes it possible to achieve simultaneous optical amplification of multiple-optical-channel wavelength-division-multiplexed (WDM) optical signals, each optical channel carrying very-high-speed time-division-multiplexed (TDM) electronic signals. This paper gives a system user’s perspective on the implications and the potential impact of optical fiber amplifiers on very-high-speed lightwave transmission systems and broadband WDM-based optical networks.

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