Title :
Simplified Model of the Dynamic Thermal Tuning Behavior of VCSELs
Author :
Chen, Jia ; Hangauer, Andreas ; Amann, Markus-Christian
Author_Institution :
Power & Sensor Syst., Siemens Corp. Technol., Munich
fDate :
7/1/2008 12:00:00 AM
Abstract :
In this letter, a simplified thermal model is used to derive a closed-form expression for the frequency dependency of the current-to-wavelength tuning coefficient (FM response) of vertical-cavity surface-emitting lasers (VCSELs). It explains the experimentally observed square root law and shows very good agreement with measured FM responses of two different VCSEL types. It yields significantly improved accuracy compared to the usually assumed first-order low-pass model.
Keywords :
frequency modulation; laser tuning; semiconductor lasers; surface emitting lasers; FM response; VCSEL; closed-form expression; current-to-wavelength tuning coefficient; dynamic thermal tuning behavior; thermal model; vertical-cavity surface-emitting lasers; Cutoff frequency; Distributed feedback devices; Frequency modulation; Laser modes; Laser theory; Laser tuning; Optical refraction; Optical variables control; Surface emitting lasers; Vertical cavity surface emitting lasers; Dynamic wavelength tuning; laser theory; tunable vertical-cavity surface-emitting lasers (VCSELs);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.924296
