Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 17,
  • Issue 3,
  • pp. 475-
  • (1999)

The Design of Triple Rib Waveguide Couplers by the Discrete Spectral Index Method

Not Accessible

Your library or personal account may give you access

Abstract

The operations of three-guide couplers are usually controlled by the width and refractive index of the guides. However, when rib waveguides are used in three-guide couplers and power dividers, we propose to use the dimensions of the ribs as the governing parameters instead. Formulating a new transcendental equation using the discrete spectral index (DSI) method, triple rib waveguide couplers are accurately analyzed for the first time. The new accurate and fast analysis of triple rib waveguides shows that the propagation constants of the various modes are dominantly controlled by the height of the middle rib. A systematic and simple procedure is consequently introduced to design quasi-transverse electric (TE) polarized triple rib waveguide couplers, which ensures maximum power transfer from one outermost guide to the other outermost guide. For triple rib power dividers, the height of the middle rib is found to control the amount of power that can be transferred from the excited middle rib waveguide to the two outer rib waveguides. Maximum power division is achieved when the three ribs of the waveguide are identical.

[IEEE ]

PDF Article
More Like This
Analysis of rib waveguides and couplers by the propagating beam method

M. D. Feit and J. A. Fleck
J. Opt. Soc. Am. A 7(1) 73-79 (1990)

Semivectorial H-field analysis of rib waveguides by a modified beam-propagation method based on the generalized Douglas scheme

Junji Yamauchi, Toshiyuki Murata, and Hisamatsu Nakano
Opt. Lett. 25(24) 1771-1773 (2000)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved