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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 7, Iss. 1 — Jan. 1, 1990
  • pp: 134–137

Influence of the refractive-index step on the threshold current density in antiguiding active slabs

J. Fesquet  »View Author Affiliations

JOSA B, Vol. 7, Issue 1, pp. 134-137 (1990)

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In an active waveguide in which the refractive index of the inner part is smaller than that of the outer part, there is modal gain if the field-medium gain is higher than a threshold value that is a function of the refractive-index step. The threshold current density is shown to decrease as the refractive-index step increases. This behavior can be explained by considering the interplay between the creation of energy in the medium gain and lateral loss.

© 1990 Optical Society of America

Original Manuscript: January 30, 1989
Manuscript Accepted: July 25, 1989
Published: January 1, 1990

J. Fesquet, "Influence of the refractive-index step on the threshold current density in antiguiding active slabs," J. Opt. Soc. Am. B 7, 134-137 (1990)

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  8. J. Fesquet, “Decrease of current density for the antiguiding slab structure GaSb/GalnAsSb/GaSb with a metallic coating,” Ann. Telecommun. 43, 112–116 (1988)
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