Calculation of metal-clad ridge-waveguide (MCRW) laser modes by mode coupling technique
- 1 June 1986
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Journal of Lightwave Technology
- Vol. 4 (6) , 689-693
- https://doi.org/10.1109/jlt.1986.1074777
Abstract
The waveguide modes of metal-clad ridge-waveguide (MCRW) lasers are calculated rigorously by way of laterally coupled-mode equations. Thereby propagation constants of the waveguide modes are computed and compared to an approximate theory. Taking into account the complete set of local TE- and TM-eigenmodes, our analysis reveals that MCRW laser modes are mainly TE-polarized with a TM-component of some percent in case of narrow stripe lasers and it is shown that for strong lateral discontinuity of the waveguide geometry radiation losses appear owing to excitation of leaky TM-modes. Furthermore, modes losses caused by metal absorption are investigated and found to be in the order of 10 cm-1for highly conductive metallizations.Keywords
This publication has 12 references indexed in Scilit:
- Low-Threshold InGaAsP-InP Metal-Clad Ridge-Waveguide (MCRW) Lasers for 1.3 µm WavelengthJapanese Journal of Applied Physics, 1986
- Lateral analysis of quasi-index-guided injection lasers: Transition from gain to index guidingJournal of Lightwave Technology, 1984
- Finite-Element Analysis of Optical and Microwave Waveguide ProblemsIEEE Transactions on Microwave Theory and Techniques, 1984
- The carrier-induced index change in AlGaAs and 1.3 µm InGaAsP diode lasersIEEE Journal of Quantum Electronics, 1983
- The effective index method and its application to semiconductor lasersIEEE Journal of Quantum Electronics, 1982
- Injected-carrier induced refractive-index change in semiconductor lasersApplied Physics Letters, 1981
- Spectral dependence of the change in refractive index due to carrier injection in GaAs lasersJournal of Applied Physics, 1981
- Single-mode positive-index guided cw constricted double-heterojunction large-optical-cavity AlGaAs lasers with low threshold-current temperature sensitivityApplied Physics Letters, 1981
- Calculation of the effective refractive-index step for the metal-cladded-ridge-waveguide laserApplied Optics, 1981
- A rigorous boundary value solution for the lateral modes of stripe geometry injection lasersIEEE Journal of Quantum Electronics, 1978