Assessing aging in tunable electro-absorption modulated, distributed Bragg reflector lasers
Abstract
Tunable optical sources used in dense wavelength division multiplexed (DWDM) systems, such as distributed Bragg reflector (DBR) lasers, are highly susceptible to aging-induced wavelength drift. Without the stabilizing influence of gain clamping in the tuning section, the tendency for a tunable source to drift is greater than that of a fixed wavelength source, such as a distributed feedback or electroabsorption modulated laser. Aging of tuning sections can cause a free-running tunable source to wander out of an allotted channel band or, in a severe case, to mode hop. Wavelength drift in a tunable source is mitigated by closed loop feedback, but with time, aging still distorts the multi-dimensional channel map of optimized operating conditions. Assessing the potential for a tunable source to age is essential to ensuring device and system reliability. Using a novel technique, we assess aging in an electro-absorption modulated, distributed Bragg reflector (EADBR) laser using change of Bragg wavelength as a measure of increase of non-radiative recombination.
Related Papers
- → Monolithically integrated tunable laterally coupled distributed-feedback lasers(2001)17 cited
- → Wavelength-Tunable Short-Cavity DBR Laser Array With Active Distributed Bragg Reflector(2006)15 cited
- → Fast tunable distributed-Bragg-reflector laser for optical switching(1993)9 cited
- → Assessing aging in tunable electro-absorption modulated, distributed Bragg reflector lasers(2002)2 cited
- First demonstration of 2 µm wavelength tunable distributed Bragg reflector laser diode(2016)