Compact low-noise pulse generating lasers with repetition rates of 10 to 50 GHz

2005 ◽  
Vol 15 (03) ◽  
pp. 497-512 ◽  
Author(s):  
G. J. Spühler ◽  
L. Krainer ◽  
S. C. Zeller ◽  
Ch. Erny ◽  
R. Paschotta ◽  
...  
Keyword(s):  
Wavelength Division Multiplexing ◽  
Time Domain ◽  
Fundamental Mode ◽  
Low Noise ◽  
Noise Pulse ◽  
Wavelength Division ◽  
Optical Time Division Multiplexing ◽  
Optical Time ◽  
The Time Domain ◽  
Time Division

We review the main results obtained with our recently introduced passively fundamental mode-locked Er : Yb :glass lasers mainly in the context of telecom applications, and we discuss their key enablers. Specifically, we focus on the aspects of the lasers for application in the time-domain for optical time-division multiplexing and in the wavelength domain for dense wavelength-division-multiplexing.

Impact of a Post-OTDM-Demux Optical Filter

2015 ◽  
pp. 310-325
Keyword(s):  
Wavelength Division Multiplexing ◽  
Pulse Width ◽  
Optical Filter ◽  
Signal Pulse ◽  
Spectral Densities ◽  
Wavelength Division ◽  
Optical Time Division Multiplexing ◽  
Optical Time ◽  
Time Division ◽  
The Impact

The impact of a post-OTDM-demultiplexing optical filter on the performance of dense On-Off Keying (OOK) Optical Time Division Multiplexing (OTDM)-Wavelength Division Multiplexing (WDM) systems is studied in this chapter. For Return-to-Zero (RZ) modulation, it was found that the additional filter working in a double-tier filter configuration did not offer any significant improvements to performance when the signal pulse width is optimized. Improvements generally increase only when the signal pulse width deviates from its optimal value and only for low spectral densities. For ideal Non-Return-to-Zero (NRZ) modulation, however, significant improvements of around 1 dB are obtained using the double-tier configuration over a large range of spectral densities.

scholarly journals Influence of ASE Noise on Performance of DWDM Networks Using Low-power Pumped Raman Amplifiers

2015 ◽  
Vol 25 (2) ◽  
pp. 147
Author(s):  
Bui Trung Ninh ◽  
Nguyen Quoc Tuan ◽  
Ta Viet Hung ◽  
Nguyen The Anh ◽  
Pham Van Hoi
Keyword(s):  
Low Power ◽  
Wavelength Division Multiplexing ◽  
Bit Error Rate ◽  
Error Rate ◽  
Network Performance ◽  
Noise Figure ◽  
Chromatic Dispersion ◽  
Low Noise ◽  
Wavelength Division ◽  
Raman Amplifiers

We present the results of investigation  for  influence of amplified spontaneous emission (ASE) noise, noise figure (NF) and  chromatic dispersion on the performance of middle-distance Dense-wavelength-division-multiplexing (DWDM) networks using low-power pumped distributed Raman amplifiers (DRAs) in two different pump configurations, i.e., forward and backward pumping. We found that the pumping configurations, ASE noise, and dispersion play an important role for improving network performance by decrease of noise figure and bit error rate (BER) of the system. Simulation results show that the lowest bit error rate and low noise figure were obtained, when using forward pumping configuration. Moreover, we have also compared ASE noise powers of the simulation with these of the experiment. These results conclude that DRA with low pump power  ($<1$~W) is the promising key technology for short-- and/or middle-distance DWDM transmission networks.

Optical time-division multiplexing and demultiplexing in a multigigabit/second fibre transmission system

1987 ◽  
Vol 23 (5) ◽  
pp. 208-209 ◽  
Author(s):  
R.S. Tucker ◽  
G. Eisenstein ◽  
S.K. Korotky ◽  
U. Koren ◽  
G. Raybon ◽  
...  
Keyword(s):  
Transmission System ◽  
Time Division Multiplexing ◽  
Fibre Transmission ◽  
Optical Time Division Multiplexing ◽  
Optical Time ◽  
Time Division

scholarly journals 160-Gb/s optical time division multiplexing and multicasting in parametric amplifiers

2008 ◽  
Vol 16 (21) ◽  
pp. 16609 ◽  
Author(s):  
Camille-Sophie Brès ◽  
Andreas O.J. Wiberg ◽  
James Coles ◽  
Stojan Radic
Keyword(s):  
Parametric Amplifiers ◽  
Time Division Multiplexing ◽  
Optical Time Division Multiplexing ◽  
Optical Time ◽  
Time Division

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.

Sign in / Sign up

Export Citation Format

Share Document