Finding the thermal time constants of a DFB laser module used in a FMCW ranging System
2004 (English)In: Proceedings of ODIMAP IV, 4th Topical Meeting on Optoelectronic Distance/Displacement Measurements and Applications: University of Oulu, Finland, 16. - 18. June 2004, Oulu, 2004Conference paper (Refereed)
In a frequency modulated continuous wave (FMCW) range and velocity-measuring system, knowledge of the thermal time constants of the laser module source is useful to obtain linear modulation. For each part of our DFB laser module a thermal resistance and capacitance were calculated, but measurements showed that our model was missing one significant time constant. FEMLAB simulations revealed that the missing time constant is of the same order of magnitude as the time it takes to heat up the area above the active region.
Place, publisher, year, edition, pages
Research subject Industrial Electronics
IdentifiersURN: urn:nbn:se:ltu:diva-40266Local ID: f54e10e0-514c-11db-9592-000ea68e967bISBN: 951-42-7368-0 (print)OAI: oai:DiVA.org:ltu-40266DiVA: diva2:1013788
Topical Meeting on Optoelectronic Distance/Displacement Measurements and Applications : 16/06/2004 - 18/06/2004
Godkänd; 2004; 20060929 (ysko)2016-10-032016-10-03Bibliographically approved