A theoretical study of semiconductor integrated etalon interference lasers. I - Waveguiding properties and intermodal coupling analysis. II - Spectral characteristics
Abstract
An exact theoretical analysis is given of the intermodal coupling between a curved and straight optical waveguide. A solution to the wave equation in a curved dielectric waveguide is obtained by applying the conformal transformation method in order to estimate properties such as radiation loss and transfer efficiency as a function of curvature radius. The unknown field at the junction discontinuity is expanded in terms of the eigenmodes of the straight and curved waveguides. By applying the boundary conditions and using orthogonality relationships, an integral equation is obtained which is subsequently solved by the method of moments. The results of the intermodal coupling analysis are used to obtain an accurate account of the lasing behaviors of a single pumped as well as a separately pumped IEI laser and to make direct comparisons between the spectral characteristics of the IEI laser and a straight Fabry-Perot laser.
- Publication:
-
IEEE Journal of Quantum Electronics
- Pub Date:
- January 1985
- DOI:
- 10.1109/JQE.1985.1072537
- Bibcode:
- 1985IJQE...21...28A
- Keywords:
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- Integrated Optics;
- Laser Modes;
- Optical Coupling;
- Optical Waveguides;
- Semiconductor Lasers;
- Circular Waveguides;
- Laser Interferometry;
- Optical Resonance;
- Reflectance;
- Lasers and Masers