Near-Infrared Twelve-Channel Wavelength Division Demultiplexer on A Semi-insulating GaAs Substrate

1993 ◽  
Author(s):  
Ray T. Chen
Keyword(s):  
Gaas Substrate ◽  
Near Infrared ◽  
Wavelength Division ◽  
Channel Wavelength

Five-channel polymer waveguide wavelength division demultiplexer for the near infrared

1991 ◽  
Vol 3 (1) ◽  
pp. 36-38 ◽  
Author(s):  
M.R. Wang ◽  
G.J. Sonek ◽  
R.T. Chen ◽  
T. Jannson
Keyword(s):  
Near Infrared ◽  
Wavelength Division ◽  
Polymer Waveguide

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.

Demonstration of Multi Pump Wide Gain Raman Amplifiers for Maximization of Repeaters Distance in Optical Communication Systems

2015 ◽  
Vol 4 (1) ◽  
pp. 38
Author(s):  
Ahmed Zaki Rashed
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Communication ◽  
Communication Systems ◽  
Gain Coefficient ◽  
Gain Medium ◽  
Wavelength Division ◽  
Raman Amplifiers ◽  
Optical Communication Systems ◽  
Multiple Wavelengths ◽  
Channel Wavelength

<p>Fiber Raman amplifiers in ultra wide wavelength division multiplexing (UW-WDM) systems have recently received much more attention because of their greatly extended bandwidth and distributed amplification with the installed fiber as gain medium. It has been shown that the bandwidth of the amplifier can be further increased and gain spectrum can be tailored by using pumping with multiple wavelengths. Wide gain of the amplifier is considered where two sets of pumps N<sub>R</sub> {5,10} are investigated. The gain coefficient is cast under polynomial forms. The pumping wavelength l<sub>R</sub> is over the range 1.40 £ l<sub>R</sub>, mm £ 1.44 and the channel wavelength l<sub>s</sub> is over the range 1.45 £ l<sub>s</sub>, mm £ 1.65. Two multiplexing techniques are processed in long-haul transmission cables where number of channels is up to 10000 in ultra-wide wavelength division multiplexing (UW-WDM) with number of links up to 480. The problem is investigated over wide ranges of affecting sets of parameters.</p>

Performance Evaluation of Bidirectional Wavelength Division Multiple Access Broadband Optical Passive Elastic Networks Operation Efficiency

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
S. Sivaranjani ◽  
A. Sampathkumar ◽  
Ahmed Nabih Zaki Rashed ◽  
T.V.P. Sundararajan ◽  
Iraj S. Amiri
Keyword(s):  
Performance Evaluation ◽  
Optical Networks ◽  
Multiple Access ◽  
Near Infrared ◽  
Error Rates ◽  
Sequence Length ◽  
Wavelength Division ◽  
Elastic Networks ◽  
Operation Efficiency ◽  
Upstream Direction

AbstractThe study has outlined the performance evaluation of bidirectional wavelength division multiple access broadband optical passive elastic networks operation efficiency. Signal power level, Q coefficient parameter, and minimum data error rates are measured numerically in both downstream and upstream directions based on broadband passive optical networks (BPONs). The transmission data rate available in the downstream direction is 10 Gb/s, while its value in the upstream direction is 2 Gb/s. The suitable operating wavelength is selected in the near-infrared region around 1550 nm for minimum losses. The bits sequence length of the optical transmitter is taken in to account for testing the optical network performance efficiency. The proposed model has presented better performance than the previous model by 25.76 % in downstream direction and by 12.28 % in upstream direction. As well as the bidirectional wavelength division multiple access broadband passive optical elastic networks performance efficiency is measured.

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