Abstract
The design and operation of long wavelength ridge waveguide distributed Bragg reflector lasers in both InGaAs–InGaAlAs and InGaAs–InGaAsP materials with deeply dry-etched surface gratings are presented. To our knowledge, quantum well intermixing was used for the first time in these systems to widen the band gap in the grating region, and significant improvement in performance is obtained from the distributed Bragg reflector (DBR) lasers with intermixed grating region.
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