Narrow-linewidth 1.5 μm quantum dot distributed feedback lasers for next generation coherent communication
Becker A, Septon T, Ghosh S, Bjelica M, Sichkovskyi V, Rippien A, Schnabel F, Witzigmann B, Eisenstein G, Reithmaier JP (2020)
Publication Type: Conference contribution
Publication year: 2020
Publisher: VDE Verlag GmbH
Pages Range: 142-144
Conference Proceedings Title: Photonische Netze - 19. ITG-Fachtagung
Event location: Leipzig
ISBN: 9783800746842
Abstract
InP-based quantum dot (QD) material with five QD layers in the active region was used to fabricate distributed feedback (DFB) lasers with a cavity length of -1.5 mm. QDs enable tailoring of device properties, like gain, bandwidth and low linewidth enhancement factor (α-factor) that are favourable for applications in next generation coherent communication [1]. Theoretical considerations taking into account the quasi zero-dimensional nature of the active material, clearly predict a strong reduction of the laser linewidth by appropriate dot design [2]. Previous results on QD DFB lasers using 2 QD layers in the active region exhibited a linewidth of 110 kHz [3]. New results based on 5 QD layers suggest considerably lower linewidth as was predicted by theory. First results suggest linewidths below 50 kHz.
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Israel (IL)How to cite
APA:
Becker, A., Septon, T., Ghosh, S., Bjelica, M., Sichkovskyi, V., Rippien, A.,... Reithmaier, J.P. (2020). Narrow-linewidth 1.5 μm quantum dot distributed feedback lasers for next generation coherent communication. In Photonische Netze - 19. ITG-Fachtagung (pp. 142-144). Leipzig, DE: VDE Verlag GmbH.
MLA:
Becker, Annette, et al. "Narrow-linewidth 1.5 μm quantum dot distributed feedback lasers for next generation coherent communication." Proceedings of the 19. ITG-Fachtagung Photonische Netze - 19th ITG Conference on Photonic Networks, Leipzig VDE Verlag GmbH, 2020. 142-144.
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