1.55-m Vertical-Cavity Laser Arrays for Wavelength-Division Multiplexing

Abstract—We report on the fabrication and operation of the first electrically pumped 1.55- m vertical-cavity laser array for wavelength-division-multiplexing applications. The array consisted of four channels operating between 1509 and 1524 nm. Wafer bonding was used to integrate GaAs–AlGaAs distributed Bragg reflectors with an InP–InGaAsP active region. Index Terms—Distributed Bragg reflectors, semiconductor lasers, surface-emitting lasers, vertical-cavity lasers, wafer bonding. I