Theory of polarization-dependent amplification in a slab waveguide with anisotropic gain and losses
- 1 January 1999
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Journal of Quantum Electronics
- Vol. 35 (2) , 240-249
- https://doi.org/10.1109/3.740747
Abstract
We analyze the waveguiding properties of a semiconductor slab waveguide amplifier in which the gain (i.e., the permittivity) in the quantum well (QW) is taken to be anisotropic. Losses may be present simultaneously in the cladding layers. Using scattering theory, a rigorous integral equation is derived. Our model incorporates the two main causes of polarization sensitivity of the amplification, viz., 1) waveguiding and 2) the anisotropic light-matter interaction in the QW. It is determined how much anisotropy is needed in the QW to get a polarization-insensitive amplification. Also, reflection coefficients and TE/TM mixing are studied. A comparison between the exact results and the Born approximation is made. A Green's tensor for a layered structure with losses is derivedKeywords
This publication has 12 references indexed in Scilit:
- A Mueller matrix formalism for modeling polarization effects in erbium-doped fiberJournal of Lightwave Technology, 1998
- Confinement factors and gain in optical amplifiersIEEE Journal of Quantum Electronics, 1997
- Polarization resolved, complete characterization of 1310 nm fiber pigtailed multiple-quantum-well optical amplifiersJournal of Lightwave Technology, 1996
- Confinement and modal gain in dielectric waveguidesJournal of Lightwave Technology, 1996
- Modal analysis of a planar waveguide with gain and lossesIEEE Journal of Quantum Electronics, 1995
- Lasing in tilted-waveguide semiconductor laser amplifiersOptical and Quantum Electronics, 1994
- Review of numerical and approximate methods for the modal analysis of general optical dielectric waveguidesOptical and Quantum Electronics, 1994
- Polarization insensitive multiple quantum well laser amplifiers for the 1300 nm windowApplied Physics Letters, 1993
- Computational modeling of diffused channel waveguides using a domain integral equationJournal of Lightwave Technology, 1990
- 1.55 μm high-gain polarisation-insensitive semiconductor travelling wave amplifier with low driving currentElectronics Letters, 1990