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van Groesen, E.W.C. and Sopaheluwakan, A. and Andonowati, A. (2003) Defect grating modes as superimposed grating states. In: 8th Annual Symposium of the IEEE/LEOS Benelux Chapter, 20-21 November 2003, Enschede, The Netherlands. pp. 273-276. IEEE Lasers and Electro-Optics Society. ISBN 903651990X
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Official URL: http://www.leosbenelux.org/index.php?id=44
For a symmetric grating structure with a defect, we show that a fully transmitted defect mode in the band gap can be obtained as a superposition of two steady states: an amplified and an attenuated defect state. Without scanning the whole band gap by transmission calculations, this simplifies the direct calculation of the defect wavelength as the eigenvalue in a non-standard eigenvalue problem.
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