Influence of Current Pulse Shape on Directly Modulated Systems Performance in Metro Area Optical Networks

Rio Campos, Carmina del and Rodriguez Horche, Paloma and Martín Minguez, Alfredo (2011). Influence of Current Pulse Shape on Directly Modulated Systems Performance in Metro Area Optical Networks. "Optics Communications", v. 284 ; pp. 5055-5061. ISSN 0030-4018. https://doi.org/10.1016/j.optcom.2010.11.019.

Description

Title: Influence of Current Pulse Shape on Directly Modulated Systems Performance in Metro Area Optical Networks
Author/s:
  • Rio Campos, Carmina del
  • Rodriguez Horche, Paloma
  • Martín Minguez, Alfredo
Item Type: Article
Título de Revista/Publicación: Optics Communications
Date: October 2011
ISSN: 0030-4018
Volume: 284
Subjects:
Freetext Keywords: Adiabatic and transient chirp, Chromatic dispersion fibers, Directly modulated lasers, Modulation current shape
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Tecnología Fotónica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Due to the fact that a metro network market is very cost sensitive, direct modulated schemes appear attractive. In this paper a CWDM (Coarse Wavelength Division Multiplexing) system is studied in detail by means of an Optical Communication System Design Software; a detailed study of the modulated current shape (exponential, sine and gaussian) for 2.5 Gb/s CWDM Metropolitan Area Networks is performed to evaluate its tolerance to linear impairments such as signal-to-noise-ratio degradation and dispersion. Point-to-point links are investigated and optimum design parameters are obtained. Through extensive sets of simulation results, it is shown that some of these shape pulses are more tolerant to dispersion when compared with conventional gaussian shape pulses. In order to achieve a low Bit Error Rate (BER), different types of optical transmitters are considered including strongly adiabatic and transient chirp dominated Directly Modulated Lasers (DMLs). We have used fibers with different dispersion characteristics, showing that the system performance depends, strongly, on the chosen DML?fiber couple.

More information

Item ID: 12157
DC Identifier: http://oa.upm.es/12157/
OAI Identifier: oai:oa.upm.es:12157
DOI: 10.1016/j.optcom.2010.11.019
Official URL: http://www.sciencedirect.com/science/journal/00304018/285/17
Deposited by: Memoria Investigacion
Deposited on: 06 Sep 2012 11:23
Last Modified: 21 Apr 2016 11:21
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