Coherence-collapse threshold of 1.3-μm semiconductor DFB lasers
| Autor: | B. Thedrez, Olivier Gauthier-Lafaye, J.-L. Lafragette, L. Silvestre, V. Voiriot, J.L. Gentner, M.F. Martineau, Frédéric Grillot |
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| Rok vydání: | 2003 |
| Předmět: |
Distributed feedback laser
Materials science business.industry Laser Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Optics law Quantum dot laser Return loss Optoelectronics Semiconductor optical gain Electrical and Electronic Engineering business Tunable laser Quantum well Coherence (physics) |
| Zdroj: | IEEE Photonics Technology Letters. 15:9-11 |
| ISSN: | 1941-0174 1041-1135 |
| Popis: | The onset of the coherence-collapse threshold is theoretically and experimentally studied for monomode 1.3-/spl mu/m antireflection/high reflection distributed-feedback lasers taking into account facet phase effects. The variation of the coherence collapse from chip to chip due to the facet phase is in the range of 7 dB and remains almost independent of the grating coefficient. Lasers that operate without coherence collapse under -15-dB optical feedback, while exhibiting an efficiency as high as 0.30 W/A, are demonstrated. Such lasers are adequate for 2.5 Gb/s isolator-free transmission without under the International Telecommunication Union recommended return loss. |
| Databáze: | OpenAIRE |
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