Abstract
Monolithic multiwavelength lasers are of great interest for many applications. They can be used as low-cost and compact multiwavelength sources for optical broadcasting in passive optical networks, for upconversion of multiple radio-over-fiber signals, for on-chip and inter-chip interconnections, and for mm or THz-wave generators. Several technologies and designs have been proposed to fabricate multiwavelength laser sources; however, the laser line spacing usually cannot be actively controlled. In this work, we propose a novel multiwavelength laser structure based on superimposed Bragg gratings on multiquantum well AlGaInAs-InP. This laser exhibits a comb of modes with a frequency spacing that can be tuned over 17 GHz.
© 2013 IEEE
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