A new MOCVD InP/AlGaInAs distributed Bragg reflector for long-wavelength VC
SELs is presented. The InP/AlGaInAs system presents a high potential for 1.
55 mum VCSELs owing to the combination of its high refractive index contras
t (Deltan similar or equal to 0.34) and its low conduction band discontinui
ty (Delta Ec similar or equal to 150meV). InP/AlGaInAs mirrors and one half
VCSEL (bottom mirror and A cavity) have been fabricated for the first time
using AlGaInAs transparent to 1.55 mum.