Sakamoto Takahide, Kawanishi Tetsuya, Izutsu Masayuki
National Institute of Information and Communications Technology, Tokyo, Japan.
Opt Lett. 2007 Jun 1;32(11):1515-7. doi: 10.1364/ol.32.001515.
We theoretically prove that a conventional Mach-Zehnder modulator can generate an optical frequency comb with excellent spectral flatness. The modulator is asymmetrically dual driven by large amplitude sinusoidal signals with different amplitudes. The driving condition to obtain spectral flatness is analytically derived and optimized, yielding a simple formula. This formula also predicts the conversion efficiency and bandwidth of the generated frequency comb.
我们从理论上证明，传统的马赫-曾德尔调制器可以产生具有优异光谱平坦度的光学频率梳。该调制器由具有不同幅度的大幅值正弦信号进行非对称双驱动。通过分析推导和优化获得光谱平坦度的驱动条件，得出一个简单公式。该公式还预测了所产生频率梳的转换效率和带宽。
