Generator of Ultrashort Optical Pulses for Time Division Multiplexing

Abstract — The performance of a device based on modified injection-locking techniques is studied by means of numerical simulations. The device incorporates master and slave config-urations, each one with a DFB laser and an electroabsortion modulator (EAM). This arrangement allows the generation of high peak power, narrow optical pulses according to a periodic or pseudorandom bit stream provided by a current signal generator. The device is able to considerably increase the modulation band-width of free-running gain-switched semiconductor lasers using multiplexing in the time domain. Opportunities for integration in small packages or single chips are discussed. Index Terms — Distributed feedback lasers, electrooptic ma-terials/devices, integrated optoelectronics, monolithic integrated circuits. I