A recursive Green’s function method is introduced for obtaining the exact modal characteristics of aperiodic distributed‐feedback lasers. Additionally, based on scaling arguments, a new expression for the coupled‐mode theory coupling coefficient, κ, is derived, resulting in increased accuracy for coupled‐mode calculations.

Topics
Electrodynamics, Integrated optics, Perturbation theory, Green-functions technique
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© 1992 American Institute of Physics.
1992
American Institute of Physics
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