Title :
Wavelength Tunable Laser Using an Interleaved Rear Reflector
Author :
Engelstaedter, J.P. ; Roycroft, B. ; Peters, F.H. ; Corbett, B.
Author_Institution :
Tyndall Nat. Inst., Univ. Coll. Cork, Cork, Ireland
Abstract :
A novel integrated reflector concept for use in widely tunable semiconductor lasers is introduced. Two concatenated Fabry-Perot cavities with low partial reflections and different cavity lengths are interleaved to realize a wavelength-selective reflective element. Differential current injection in the interleaved cavities is used to tune the reflection peak. The reflector is integrated in an all-active multisection device. The laser tunes across 37 wavelength channels on a 100-GHz grid over a wavelength span of 30 nm. The linewidth of each mode is <7 MHz while the power deviation is <6 dB.
Keywords :
Fabry-Perot resonators; integrated optics; laser cavity resonators; laser tuning; optical elements; semiconductor lasers; Fabry-Perot cavities; all-active multisection device; differential current injection; frequency 100 GHz; interleaved rear reflector; low partial reflections; reflection peak; wavelength 30 nm; wavelength-selective reflective element; widely tunable semiconductor lasers; Interleaved reflector; semiconductor lasers; tunable lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2035637