Abstract

A continuously tunable millimeter-wave optical transmitter is demonstrated by using a monolithic mode-locked semiconductor laser and an electro-optic modulator. By photomixing a microwave subcarrier with the selected harmonics of the mode-locked frequency, millimeter-wave subcarrier frequency transmission up to 300 GHz is achievable. Experimentally, subcarrier frequency continuously tunable from DC to 43 GHz is measured.

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