Cladding-pumped erbium-doped fiber amplifiers for low noise high-power WDM and analog CATV boosters-new design using ring-doping

2002 ◽  
Author(s):  
J. Nilsson
Keyword(s):  
High Power ◽  
Low Noise ◽  
Fiber Amplifiers ◽  
Erbium Doped

Low-noise operation of fluoride-based erbium-doped fiber amplifiers with ^4I_11/2-level pumping

1997 ◽  
Vol 22 (16) ◽  
pp. 1235 ◽  
Author(s):  
Yasutake Ohishi ◽  
Makoto Yamada ◽  
Terutoshi Kanamori ◽  
Shoichi Sudo ◽  
Makoto Shimizu
Keyword(s):  
Low Noise ◽  
Fiber Amplifiers ◽  
Erbium Doped

Design of EDFA based 16 channel WDM system using counter directional high pump power

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Md. Asraful Sekh ◽  
Mijanur Rahim ◽  
Anjumanara Begam
Keyword(s):  
Pump Power ◽  
Wavelength Division Multiplexing ◽  
Input Power ◽  
Low Noise ◽  
Fiber Amplifiers ◽  
Wavelength Division ◽  
High Pump Power ◽  
Erbium Doped ◽  
High Pump ◽  
Channel Wavelength

Abstract In this paper, design of erbium-doped fiber amplifiers (EDFA) based 16 channel wavelength-division multiplexing (WDM) system for different pump powers and input signal levels using counter propagating pumping scheme is reported. Wavelength range between 1548 and 1560 nm in C-band with channel spacing of 0.75 nm at a bit rate of 10 Gbps are used. Input power given to all the channels is taken between −20 and −35 dBm with 3 dBm variation. Pump power levels between 100 and 500 mW at 980 nm wavelength are used. Low gain flatness with high gains and low noise figures are achieved with the proposed scheme.

High-power, low-noise praseodymium-doped fluoride-fiber amplifiers

1995 ◽  
Author(s):  
Makoto Shimizu ◽  
Makoto Yamada ◽  
Terutoshi Kanamori ◽  
Yasutake Ohishi ◽  
Yukio Terumuma ◽  
...  
Keyword(s):  
High Power ◽  
Low Noise ◽  
Fiber Amplifiers ◽  
Fluoride Fiber

Low-noise performance of gain-clamped erbium-doped fiber amplifiers by loop lasing oscillation

1996 ◽  
Author(s):  
Ming Cai ◽  
Xiaoming Liu ◽  
Jingcui Cui ◽  
Pingsheng Tang ◽  
Dan Liu ◽  
...  
Keyword(s):  
Low Noise ◽  
Fiber Amplifiers ◽  
Noise Performance ◽  
Erbium Doped

High power 980 nm Al-free strained quantum-well lasers for erbium-doped fiber amplifiers

2000 ◽  
Vol 14 (3) ◽  
pp. 201-204
Author(s):  
Lianghui Chen ◽  
Zuntu Xu ◽  
Xiaoyu Ma ◽  
Jingming Zhang ◽  
Guowen Yang ◽  
...  
Keyword(s):  
Quantum Well ◽  
High Power ◽  
Quantum Well Lasers ◽  
Fiber Amplifiers ◽  
Erbium Doped ◽  
Strained Quantum Well

RELIABILITY OF HIGH POWER PUMP LASERS FOR ERBIUM-DOPED FIBER AMPLIFIERS

1996 ◽  
Vol 07 (01) ◽  
pp. 55-84 ◽  
Author(s):  
MITSUO FUKUDA
Keyword(s):  
High Power ◽  
Device Fabrication ◽  
Fiber Amplifiers ◽  
Coating Film ◽  
Fabrication Technology ◽  
Erbium Doped ◽  
Optical Transmission Systems ◽  
Laser Chip ◽  
Pump Lasers ◽  
Device Technology

The degradation behavior and the reliability of 980 nm lasers and 1480 nm lasers are reviewed and discussed. In addition, packaging problems for the high power lasers are also discussed from the application viewpoint. For 980 nm lasers the reliability in laser chip is limited mainly by the instability of an interface between the laser material (facet) and the anti-reflecting coating film, and for most 1480 nm lasers the reliability of the laser chip is determined mainly by the instability of a buried heterointerface. These reliability problems have been solved, however, by examining the material properties and improving device fabrication technology. The main packaging problem is a packaging-induced failure (PIF) causing sudden failure in 980 nm lasers sealed in dry N2 or Ar, but packaging problems have also been suppressed or eliminated. The device technology and packaging technology needed to make high power pump laser modules have been established, and erbium-doped fiber amplifiers pumped by these lasers are indispensable components of many optical transmission systems.

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