Estimate of the limitations in data transmission imposed on digitally modulated laser diodes by the bit pattern

Mazen Radhe Hassan, Mohd Syuhaimi Ab Rahman

Research output: Contribution to journalArticle

Abstract

In this paper, the cut-off bit-pattern phenomenon of a digitally-modulated semiconductor laser diode (LD) is calculated. The cut-off bit-pattern Q off cut- off Q off cut - off is defined as the number of "0" bits (i.e.; OFF pulses) preceding the considered "1" bit (i.e.; ON pulse) above which an LD cannot respond normally to an injected data pattern and will consequently shutdown or become inoperable. The latter case occurs when the turn-on time delay of an LD exceeds the bit-time interval of the injected current pulse. An analytical calculation for an LD's cut-off bit-pattern is derived in terms of laser cavity parameters, bit rate, modulation and dc-bias currents. This calculation can be used to predetermine, based on typical values for an LD, accurate dc-bias and modulation current values that should be utilized to ensure an LD is operational for high-speed optical communications applications.

Original languageEnglish
Pages (from-to)969-985
Number of pages17
JournalOptical and Quantum Electronics
Volume45
Issue number9
DOIs
Publication statusPublished - Sep 2013

Fingerprint

data transmission
Data communication systems
Semiconductor lasers
semiconductor lasers
cut-off
estimates
pulses
Modulation
modulation
shutdowns
Bias currents
Laser resonators
Optical communication
laser cavities
optical communication
Time delay
time lag
high speed
intervals

Keywords

  • Cut-off bit-pattern
  • Digital modulation
  • Laser diode
  • Theoretical analysis

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Estimate of the limitations in data transmission imposed on digitally modulated laser diodes by the bit pattern. / Hassan, Mazen Radhe; Ab Rahman, Mohd Syuhaimi.

In: Optical and Quantum Electronics, Vol. 45, No. 9, 09.2013, p. 969-985.

Research output: Contribution to journalArticle

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