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A simple and efficient system for generating wavelength-tunable optical short pulses from a self-seeded, gain-switched Fabry–Perot laser diode is presented. The laser’s external cavity consists only of a tunable optical filter. The side-mode suppression ratio is better than 30 dB over a relatively wide wavelength-tuning range of 26 nm. In addition, a constant repetition frequency of 534.65 MHz can be maintained during wavelength tuning.Department of Electrical EngineeringAuthor name used in this publication: Dong Ning Wan

Simple self-seeding scheme for generation of wavelength-tunable optical short pulses