Abstract
The waveguide modes of separated multiclad-layer (SML) laser diodes are calculated accurately by means of laterally-coupled mode equations. Thereby, it is shown that the mode losses are appreciably higher as compared to previous calculations. In particular, enhancement of the mode losses in narrow-stripe SML lasers (w ≤ 5 μm) may explain the relatively high threshold currents and low efficiencies reported so far for AlGaAs-GaAs and InGaAsP-InP SML lasers, A detailed investigation of various geometries reveals this laser structure to equal the related channeled substrate planar (CSP) laser with respect to the waveguide losses.
| Original language | English |
|---|---|
| Pages (from-to) | 1992-1998 |
| Number of pages | 7 |
| Journal | IEEE Journal of Quantum Electronics |
| Volume | 22 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 1986 |
| Externally published | Yes |
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