Laterally Coupled DFB Lasers for One-Step Growth Photonic Integrated Circuits in InP

Design and characterization of a transmitter building block for one-step growth photonic integration, featuring a 1310 - nm laterally coupled distributed-feedback laser with a front-side passive optical waveguide and a back-side optical power monitor, are presented. Formed on a semi-insulating Fe : InP substrate and processed by means of a stepper optical lithography, the device perfectly suits the multiguide vertical integration-a newly developed one-step growth photonic integrated technique in InP.