Abstract

Ridge waveguide distributed Bragg reflector (RW-DBR) lasers are common in InP-based lasers for narrow linewidth communications applications.¹ However, the device fabrication generally entails regrowth of part of the laser structure which then makes it difficult to fabricate with aluminum containing alloys. The RW-DBR (Fig. 1) reported here can be fabricated in any material system with only a standard growth for the laser structure.² A single DBR is dry etched near the active region to a depth sufficient to provide coupling for wavelength selective feedback. A lateral index-guide is then fabricated to produce low-threshold, stable, fundamental mode devices.

© 1994 Optical Society of America