GHz-bandwidth optical filters based on high-order silicon ring resonators
GHz-bandwidth optical filters based on high-order silicon ring resonators
复制标题
DOI：
10.1364/oe.18.023784
复制
发表时间：
2010-11-08
期刊：
影响因子：
3.8
通讯作者：
Asghari, Mehdi
中科院分区：
文献类型：
--
作者：
Dong, Po;Feng, Ning-Ning;Asghari, Mehdi
先前演示的高阶硅环滤波器通常具有大于100 GHz的带宽。在这里，我们展示了具有非常高消光比（类似于50 dB）的1-2 ghz带宽滤波器。用于构建这些滤波器的硅波导具有类似于0.5 dB/cm的传播损耗。过滤器的每个环都由位于环顶部的金属加热器热控制。环形共振的功耗约为72 mW，可以在一个自由光谱范围内调谐，从而产生波长可调谐的滤光片。二阶和五阶环形谐振器在微波/射频信号处理中有很好的应用。(C) 2010年美国光学学会
Previously demonstrated high-order silicon ring filters typically have bandwidths larger than 100 GHz. Here we demonstrate 1-2 GHz-bandwidth filters with very high extinction ratios (similar to 50 dB). The silicon waveguides employed to construct these filters have propagation losses of similar to 0.5 dB/cm. Each ring of a filter is thermally controlled by metal heaters situated on the top of the ring. With a power dissipation of similar to 72 mW, the ring resonance can be tuned by one free spectral range, resulting in wavelength-tunable optical filters. Both second-order and fifth-order ring resonators are presented, which can find ready application in microwave/radio frequency signal processing. (C) 2010 Optical Society of America