Classical phase-amplitude description of optical amplifier noise: application to noise figure derivation for distributed optical amplifiers

2003 ◽  
Author(s):  
Philippe B. Gallion
Keyword(s):  
Noise Figure ◽  
Optical Amplifiers ◽  
Optical Amplifier ◽  
Amplifier Noise ◽  
Phase Amplitude

Automatic Gain-Controlled HOA with Residual Pumping

2017 ◽  
Vol 0 (0) ◽  
Author(s):  
Navjot Singh ◽  
Mahendra Kumar ◽  
Ashu Verma
Keyword(s):  
Pump Power ◽  
Broad Spectrum ◽  
Communication Systems ◽  
Noise Figure ◽  
Optical Amplifiers ◽  
Optical Amplifier ◽  
Maximum Gain ◽  
L Band ◽  
Flat Gain

AbstractThe interminable need of number of channels in communication systems escorts more number of wavelengths to be used. This broad spectrum of wavelengths when expands in both C and L band, the need of hybrid optical amplifiers (HOA) comes into play. In this work, we proposed an automatic gain-controlled HOA using Residual pumping for C/L band. The desired gain is fixed at 27 dB at pump power swinging between 300 and 400 mW. The input powers are automatically adjusted so as to provide invariable and flat gain eliminating the wavelength dependency of optical amplifier to great extents. Analysis is carried out in a 32 channel WDM system and power transients are also measured in terms of powers of surviving channels and excursion amplitudes by adding and dropping up to 28 channels. The output is adjudicated in terms of maximum gain achieved, OSNR, BER, gain flatness, noise figure and power transient excursion amplitudes.

Optical amplifier noise figure in a coherent optical transmission system

1990 ◽  
Vol 8 (9) ◽  
pp. 1409-1413 ◽  
Author(s):  
G.R. Walker ◽  
R.C. Steele ◽  
N.G. Walker
Keyword(s):  
Optical Transmission ◽  
Noise Figure ◽  
Optical Amplifier ◽  
Transmission System ◽  
Amplifier Noise

Optical amplifier noise figure reduction for optical single-sideband signals

1999 ◽  
Vol 17 (10) ◽  
pp. 1793-1796 ◽  
Author(s):  
R.A. Griffin ◽  
P.M. Lane ◽  
J.J. O'Reilly
Keyword(s):  
Noise Figure ◽  
Optical Amplifier ◽  
Single Sideband ◽  
Amplifier Noise ◽  
Optical Single Sideband

COMPACT AND EFFICIENT Er–Yb-DOPED FIBER AMPLIFIER

2008 ◽  
Vol 17 (02) ◽  
pp. 193-198 ◽  
Author(s):  
K. DIMYATI ◽  
S. W. HARUN ◽  
S. Z. MUHD-YASSIN ◽  
M. K. ABD-RAHMAN ◽  
H. AHMAD
Keyword(s):  
Noise Figure ◽  
Optical Amplifiers ◽  
Low Cost ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Great Promise ◽  
Pass Design ◽  
Double Pass ◽  
Cost Efficient ◽  
Lower Noise

A compact and efficient optical amplifier is demonstrated using an erbium–ytterbium-doped fiber amplifier (EYDFA) with a double-pass configuration. It uses only 3 m of doped fiber with 20 mW pump power. This forward-pumped amplifier achieves a maximum low signal gain of 37 dB and a corresponding noise figure of 5.5 dB. Compared with the backward-pumping double-pass EYDFA, the gain obtained is 7 dB higher, with a lower noise figure of 5.5 dB. In addition, the gain obtained in this study is 17 dB higher than that of a conventional forward-pumping single-pass amplifier, while its noise figure is only 0.5 dB higher. These results show that the forward-pumped double-pass design holds great promise in the development of practical and cost-efficient optical amplifiers which can be pumped by using LEDs or low cost laser diodes.

Optical Amplifier Noise Figure -A New Approach to Amplifier Characterization

1994 ◽  
Author(s):  
Christian Hentschel ◽  
Edgar Leckel ◽  
Emmerich Müller ◽  
Hewlett Packard
Keyword(s):  
Noise Figure ◽  
Optical Amplifier ◽  
New Approach ◽  
Amplifier Noise
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