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Proceedings Paper

Polarization-dependent amplification in planar waveguides
Author(s): Taco D. Visser; Daan Lenstra; Hans Blok
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Paper Abstract

This presentation consists of three parts: (1) A new mode solver for structures with high gain and/or losses is discussed. By using 'scattering matrices,' great numerical robustness is obtained. (2) In planar waveguides, the amplification for TE modes can be much larger than that for TM modes, even though the confinement to the active layer is comparable. The connection between confinement factors and gain is elucidated. We show that an often used approximation for the TM gain is not valid for practical configurations. An improved approximation is given. (3) We describe how a waveguide with an anisotropic active layer can be modeled using a scattering approach. This model should then tell how much anisotropy is needed to get a gain that is polarization-independent.

Paper Details

Date Published: 1 May 1996
PDF: 10 pages
Proc. SPIE 2693, Physics and Simulation of Optoelectronic Devices IV, (1 May 1996); doi: 10.1117/12.238982
Show Author Affiliations
Taco D. Visser, Vrije Univ. Amsterdam (Netherlands) and Delft Univ. of Technolgy (Netherlands)
Daan Lenstra, Vrije Univ. Amsterdam (Netherlands)
Hans Blok, Delft Univ. of Technology (Netherlands)


Published in SPIE Proceedings Vol. 2693:
Physics and Simulation of Optoelectronic Devices IV
Weng W. Chow; Marek Osinski, Editor(s)

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