Rogers C E, Carini J L, Pechkis J A, Gould P L
Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA.
Rev Sci Instrum. 2011 Jul;82(7):073107. doi: 10.1063/1.3611005.
We use a waveguide-based electro-optic phase modulator, driven by a nanosecond-timescale arbitrary waveform generator, to produce an optical spectrum with an arbitrary pattern of peaks. A programmed sequence of linear voltage ramps, with various slopes, is applied to the modulator. The resulting phase ramps give rise to peaks whose frequency offsets relative to the carrier are equal to the slopes of the corresponding linear phase ramps. This simple extension of the serrodyne technique provides multi-line spectra with peak spacings in the 100 MHz range.
我们使用一个基于波导的电光相位调制器，由一个纳秒级的任意波形发生器驱动，来产生具有任意峰值图案的光谱。将具有各种斜率的线性电压斜坡的编程序列应用于调制器。由此产生的相位斜坡会产生峰值，其相对于载波的频率偏移等于相应线性相位斜坡的斜率。这种对锯齿波技术的简单扩展提供了峰值间距在100 MHz范围内的多线光谱。
