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Title: Influence of gain on reflection spectra in widely tunable lasers
Authors: Laroy, Reinhard
Morthier, G.
Baets, R.
Issue Date: Sep-2004
Host Document: European Semiconductor Laser Workshop pages:1-1
Conference: European Semiconductor Laser Workshop 2004 edition:2004 location:Gotheborg
Abstract: In widely tunable lasers a high side mode suppression and a large quasi-continuous tuning range can only be obtained with a good grating design. In widely tunable twin-guide lasers, the reflectors and the gain section overlap and this causes a different behavior for the reflectors as compared to passive ones. E.g. using superstructure gratings for DBR lasers, we found that some modes were skipped and no quasi-continuous tuning was obtained due to the influence of the gain on the reflection spectra of the superstructure gratings. Using an optimization method, we have designed a superstructure grating with a flat reflection spectrum even in the presence of gain, such that a good tuning behavior can be guaranteed.
Publication status: published
KU Leuven publication type: IMa
Appears in Collections:Research Unit KU Leuven Centre for IT & IP Law (CiTiP)

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