Radiation loss in tapered waveguides
JOSA, Vol. 71, Issue 9, pp. 1107-1114 (1981)
http://dx.doi.org/10.1364/JOSA.71.001107
Acrobat PDF (880 KB)
Abstract
The eikonal or local-normal-mode (LNM) approximation method is presented and applied to the investigation of the radiation loss of a TE guided mode that is due to a narrowing linear taper in slab geometry using a weak-coupling approximation. An exact expression for the total radiation loss is given within the limits of the theory, these limits being small refractive-index changes per wavelength. An approximation to the loss expression is evaluated numerically, indicating that the total radiative loss is roughly exponentially dependent on mode number and on taper step size, at least for weak tapers. The method developed here is not restricted to tapered structures but can be readily adapted to any type of longitudinal disturbance.
© 1981 Optical Society of America
Citation
N. Tzoar and R. Pascone, "Radiation loss in tapered waveguides," J. Opt. Soc. Am. 71, 1107-1114 (1981)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-71-9-1107
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
« Previous Article | Next Article »
OSA is a member of 