Wideband, Efficient Optical Serrodyne Frequency Shifting with a Phase Modulator and a Nonlinear Transmission Line

摘要

We report shifting of the frequency of an 850 nm laser with an instantaneousbandwidth of (350-1650), MHz and an efficiency between 35% (minimum) to 80%(best at frequencies around 600 and 1500, MHz) by phase modulation with asawtooth waveform ("serrodyne frequency shifting"). We use a fiber-coupledtraveling wave electro-optical modulator driven by a nonlinear transmissionline.