Summary form only given. Wavelength tunable vertical cavity surface emitting lasers (VCSELs) have many applications in compact instrumentation and WDM communications. 31.6 nm of continuous tuning has been demonstrated by a micromechanical tunable VCSEL with a movable cantilever. Because the VCSEL's top mirror is embedded into this movable cantilever, tilt is introduced to this top distributed Bragg reflector (DBR) as the lasing wavelength is tuned. A frequently asked question is the effect of this tilted DBR on the optical mode in such a VCSEL structure. In the paper, we address this question with a numerical approach and show that for devices with diameters of 5 /spl mu/m or less, tilt loss does not dominate modal optical loss in our tunable structure.
Tilt loss in wavelength tunable micromechanical vertical cavity lasers
01.01.1999
307500 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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