Photonic Integrated Circuit Combining Two GaAs Distributed Bragg Reflector Laser Diodes for Generation of the Beat Signal

Abstract

We have fabricated a photonic integrated circuit (PIC) that had two GaAs distributed Bragg reflector (DBR) laser diodes (LD) and a Y-branch coupler integrated by means of the compositional disordering of a quantum well. Using this PIC as an optical heterodyne sweeper, frequency characteristics of a GaAs Schottky photodiode were measured.