Theory of shutdown of semiconductor laser source remotely

Mohd Syuhaimi Ab Rahman, Mazen Radhe Hassan

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We present a new theory that can be applied to predetermine the value of cut-off external optical feedback (EOF) in terms of cut-off external reflectivity rcut-off for a semiconductor laser source subjected to incoherent EOF. rcut-offis defined as the value of external reflectivity around which the turn-on time delay ton of semiconductor laser diode (SLD) will exceed the bit time interval of the injected current pulse and result in shutdown-like/inoperable case. An accurate analytical model of rcut-off is derived and presented in terms of laser cavity parameters, injection current, and biasing ratio. The benefit of this study is that the designer can predetermine the requirements that should be taken into account when considering the SLD in an optical communication system in order to avoid an inoperable case due to incoherent EOF. In addition, the presented theory can be applied to develop an effective method that can be used to control, i.e., shutdown/restart, the laser source remotely. This can be performed by attacking the laser source with incoherent EOF from a distance and tuning the external reflectivity around the value of rcut-off..

Original languageEnglish
Pages (from-to)1626-1633
Number of pages8
JournalJournal of the Optical Society of America B: Optical Physics
Volume27
Issue number8
DOIs
Publication statusPublished - 2010

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shutdowns
semiconductor lasers
reflectance
cut-off
laser cavities
lasers
optical communication
telecommunication
time lag
tuning
injection
intervals
requirements
pulses

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Statistical and Nonlinear Physics

Cite this

Theory of shutdown of semiconductor laser source remotely. / Ab Rahman, Mohd Syuhaimi; Hassan, Mazen Radhe.

In: Journal of the Optical Society of America B: Optical Physics, Vol. 27, No. 8, 2010, p. 1626-1633.

Research output: Contribution to journalArticle

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