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Multiwavelength laterally complex coupled distributed feedback laser arrays with monolithically integrated combiner fabricated by focused-ion-beam lithography

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5 Author(s)
Bach, L. ; Technische Physik, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany ; Reithmaier, I.P. ; Forchel, A. ; Gentner, J.L.
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A multiwavelength laser array with four complex coupled distributed feedback lasers was fabricated by focused-ion-beam lithography. The laser array was monolithically integrated with a combiner network to allow simultaneous operation and coupling of four wavelengths into one single-mode fiber. To reduce the fabrication complexity, focused-ion-beam technology was used to define complex coupled gratings lateral to pumped ridge waveguide sections without any further overgrowth step. A four wavelength output with 6-nm-wavelength spacing and side-mode suppression ratios of more than 35 dB were obtained with output powers up to 6 mW per channel. © 2001 American Institute of Physics.

Published in:

Applied Physics Letters  (Volume:79 ,  Issue: 15 )

Date of Publication:

Oct 2001

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