Application of the Discrete Spectral Index Method to the Design of Coupled Ridge Waveguides with Carrier Injection,
Abstract
The discrete spectral index (DSI) method has proved successful for modelling single rib waveguides, symmetric and asymmetric couplers. For couplers, the method produces propagation constants for the lowest-order symmetric and antisymmetric supermodes, Bs, and Aas, and generates accurate field profiles. A necessary feature of the DSI method is that the layers below the ribs must be of uniform refractive index, n. However, for example a twin-guide laser amplifier, consisting of two coupled ridge waveguides, experiences small non-uniform changes in n in the active layer as a result of carrier injection. In this work, a technique, which is a combination of the DSI method and a perturbation approach, has been developed to model such structures.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1992
- Accession Number
- ADP008142
Entities
People
- G. J. Rees
- M. J. Adams
- P. C. Kendall
- P. N. Robson
- S. V. Burke
Organizations
- University of Sheffield