宽带光锯齿波移频
Broadband Optical Serrodyne Frequency Shifting
摘要：
我们证明了锯齿波频移的光从200 MHz到1.2 GHz的效率优于60%。频移是由一个由高频、高保真的正弦波驱动的电光相位调制器产生的，该正弦波是由一个市售的非线性传输线（NLTL）无源产生的。我们还实现了推挽配置使用两个serrodyne驱动的相位调制器，允许连续调谐-1.6 GHz和+1.6 GHz之间。与竞争技术相比，该技术简单而稳健，并在该频段提供最大的可用调谐范围。
英文摘要：
We demonstrate serrodyne frequency shifting of light from 200 MHz to 1.2 GHz with an efficiency of better than 60 percent. The frequency shift is imparted by an electro-optic phase modulator driven by a high-frequency, high-fidelity sawtooth waveform that is passively generated by a commercially available Non-Linear Transmission Line (NLTL). We also implement a push-pull configuration using two serrodyne-driven phase modulators allowing for continuous tuning between -1.6 GHz and +1.6 GHz. Compared to competing technologies, this technique is simple and robust, and offers the largest available tuning range in this frequency band.
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