A novel method to improve noise figure for a wide bandwidth single stage L-band EDFA

2003 ◽  
Author(s):  
T. Yamashita ◽  
M. Yoshida ◽  
H. Tanaka ◽  
S. Tanaka ◽  
T. Yazaki ◽  
...  
Keyword(s):  
Noise Figure ◽  
Single Stage ◽  
Wide Bandwidth ◽  
Novel Method ◽  
L Band

A novel method to improve noise figure for double-pass L-band EDFA

2005 ◽  
Author(s):  
Hao Zhang ◽  
Ling Yu ◽  
Yange Liu ◽  
Chao Wang ◽  
Lihui Liu ◽  
...  
Keyword(s):  
Noise Figure ◽  
Double Pass ◽  
Novel Method ◽  
L Band

scholarly journals Design, simulation and optimization of a single stage Low Noise Amplifier (LNA) for very low power L- Band satellite handheld applications

2018 ◽  
Vol 17 (2) ◽  
pp. 37-42
Author(s):  
Mohammad Mohiuddin Uzzal
Keyword(s):  
Noise Figure ◽  
Low Noise ◽  
Low Noise Amplifier ◽  
Single Stage ◽  
Center Frequency ◽  
Simulation And Optimization ◽  
Consumption Cost ◽  
Design Systems ◽  
L Band ◽  
Noise Amplifier

In first stage of each microwave receiver, there is a Low Noise Amplifier (LNA) stage, and this LNA plays an important role to determine the quality factor of the receiver. The design of a LNA requires the trade-off of many important parameters including gain, Noise Figure (NF), stability, power consumption, cost and design complexity. In this paper, we have designed and simulate a single stage stable LNA circuit having gain 11.78 dB and noise figure 1.86 dB using microwave BJT AT3103 with Agilent package Advance Design Systems (ADS). This LNA operates at center frequency of 2 GHZ and it can be used in L-Band satellite modem for tracking applications.

scholarly journals Single-stage gain-clamped L-band EDFA with C-band ASE saturating tone

Laser Physics ◽  
2009 ◽  
Vol 19 (5) ◽  
pp. 1026-1029 ◽  
Author(s):  
A. A. A. Bakar ◽  
M. A. Mahdi ◽  
M. H. Al-Mansoori ◽  
S. Shaari ◽  
A. K. Zamzuri
Keyword(s):  
Single Stage ◽  
L Band

scholarly journals Performance Analysis of Flat Gain Wideband Raman Amplifier for S+C and C+L Band DWDM System

2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Dipika D. Pradhan ◽  
Abhilash Mandloi
Keyword(s):  
Pump Power ◽  
Noise Figure ◽  
Excited State Absorption ◽  
Telecommunication Networks ◽  
Raman Amplifier ◽  
Gain Flattening ◽  
L Band ◽  
Flat Gain ◽  
Amplifier Design ◽  
Dwdm System

Raman amplifier is an open area of research in telecommunication field. This paper discusses the performance of 64 channels of 10 Gbps WDM systems with backward multipump Raman amplifier. The main goal of this paper is the optimization of Raman amplifier to minimize its gain variation without using any gain flattening techniques. To increase the transmission capacity of DWDM system, Raman amplifier with backward multipump configuration is implemented. The optimized parameters such as pump power and frequencies are used to deliver both ground and excited state absorption for amplification in S+C and C+L band region. The pump power and frequencies are optimized through multitarget and multiparameter optimization tool available in OptiSystem software. Gain ripple was achieved <0.5 dB for this simulation setup. The maximum flat gain achieved is 8.6 dB and noise figure of <8 dB was achieved for this wide bandwidth without using gain flattening techniques. This amplifier design will be helpful for CATV applications and telecommunication networks.

Single Stage C-Band Erbium-Doped Fiber Amplifier (EDFA) Development and Performance Evaluation

2018 ◽  
Vol 7 (2) ◽  
pp. 41-49
Author(s):  
Sami D. Alaruri
Keyword(s):  
Conversion Efficiency ◽  
Noise Figure ◽  
Fiber Amplifier ◽  
Single Stage ◽  
Erbium Doped Fiber Amplifier ◽  
Signal Gain ◽  
Laser Pump ◽  
Mathematical Expressions ◽  
Erbium Doped ◽  
And Performance

In this work, a single-stage C-band erbium-doped fiber amplifier (EDFA) has been constructed and characterized. Gain (G) and noise figure (NF) measurements collected for the C-band EDFA as a function of wavelength (1528.8 to 1562.3 nm) and laser pump powers are discussed. Further, the EDFA conversion efficiency (CE) as a function of laser pump powers is presented. Simplified mathematical expressions for the EDFA gain, NF, and CE are provided. The C-band EDFA signal gain remained flat in the spectral region 1539 to 1562 nm. Moreover, the C-band EDFA NF increased with wavelength and decreased with the 1480 nm laser pump powers. Additionally, the C-band EDFA maximum achieved conversion efficiency and signal gain is 22.64% at P1=19.49 mW and 22.6 dB at 1531.1 nm, respectively.

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.

Design of a Front-End for Satellite Receiver

2016 ◽  
Vol 6 (5) ◽  
pp. 2282 ◽  
Author(s):  
Tran Van Hoi ◽  
Ngo Thi Lanh ◽  
Nguyen Xuan Truong ◽  
Nguyen Huu Duc ◽  
Bach Gia Duong
Keyword(s):  
Dynamic Range ◽  
Noise Figure ◽  
High Sensitivity ◽  
Wide Band ◽  
Local Oscillator ◽  
Low Noise ◽  
Voltage Controlled Oscillator ◽  
Front End ◽  
L Band ◽  
Satellite Receiver

<p>This paper focuses on the design and implementation of a front-end for a Vinasat satellite receiver with auto-searching mechanism and auto-tracking satellite. The front-end consists of a C-band low-noise block down-converter and a L-band receiver. The receiver is designed to meet the requirements about wide-band, high sensitivity, large dynamic range, low noise figure. To reduce noise figure and increase bandwidth, the C-band low-noise amplifier is designed using T-type of matching network with negative feedback and the L-band LNA is designed using cascoded techniques. The local oscillator uses a voltage controlled oscillator combine phase locked loop to reduce the phase noise and select channels. The front-end has successfully been designed and fabricated with parameters: Input frequency is C-band; sensitivity is greater than -130 dBm for C-band receiver and is greater than -110dBm for L-band receiver; output signals are AM/FM demodulation, I/Q demodulation, baseband signals.</p>

Flattened gain S + C + L Band RAMAN–Thulium-Doped Tellurite Fiber Amplifier Hybrid Optical Amplifier for Super Dense Wavelength Division Multiplexing System

2019 ◽  
Vol 40 (3) ◽  
pp. 167-170 ◽  
Author(s):  
Chakresh Kumar ◽  
Rakesh Goyal
Keyword(s):  
Wavelength Division Multiplexing ◽  
Noise Figure ◽  
Power Level ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Dense Wavelength Division Multiplexing ◽  
Wavelength Division ◽  
Proposed Model ◽  
L Band ◽  
Hybrid Optical Amplifier

Abstract In this paper we have examined the performances of 180×10 Gbps super dense wavelength division multiplexing (SD-WDM) system using the RAMAN–thulium-doped tellurite fiber amplifier (TDTFA) hybrid optical amplifier (HOA) with the channel spacing of 50 GHz in S+C+L band. Accepted rating flattened gain of 39.21 dB with the noise figure less than 5 dB is archived with the dual-pumping ( power level of 500 mW at 980 nm and at 1100 nm for RAMAN optical amplifier and similar, power level of TDTF amplifier is set to 500 mW and 350 mW at 1150 nm) technique. The effect of the proposed hybrid amplifier is evaluated in terms of gain and noise figure without using any coast effective technique. The outcome from the proposed model is also compared here with the existing optical amplifier.

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