Thermal characterization and stabilization of DFB lasers for access networks
Tipus de documentProjecte Final de Màster Oficial
Data2021-12-09
Condicions d'accésAccés obert
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Abstract
Current optical communication schema are based on TDMA. New schema have been proposed that are based on WDM. A WDM based scheme needs all lasers to be stable at a fixed wavelength. The wavelength of a laser can be modified by temperature changes. In this work, a typical laser used for optical communications is characterized. A thermal-electrical equivalent model is proposed to model the laser. The necessary experiments have been performed to characterize the laser and extract the model parameters. With the model completed, a PI control scheme has been implemented. This implemented control stabilizes the laser to a certain degree but the fabrication and the layout of the packaging prevent a feedback control to have a high performance. Then, a feed-forward control based on measuring the air temperature is implemented. This feed-forward control improves the stability of the laser in front of temperature changes to a satisfactory degree.
Col·leccions
Fitxers | Descripció | Mida | Format | Visualitza |
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Thermal_charact ... ss_networks_Roger_Sole.pdf | 1,419Mb | Visualitza/Obre |