Song Junfeng, Luo Xianshu, Tu Xiaoguang, Jia Lianxi, Fang Qing, Liow Tsung-Yang, Yu Mingbin, Lo Guo-Qiang
Institute of Microelectronics, Agency for Science, Technology and Research, 11 Science Park Road, Science Park II, Singapore 117685, Singapore.
Opt Express. 2013 May 20;21(10):12767-75. doi: 10.1364/OE.21.012767.
In this work, we demonstrate thermo-optical quasi-digital optical switch (q-DOS) using silicon microring resonator-coupled Mach-Zehnder interferometer. The optical transmission spectra show box-like response with 1-dB and 3-dB bandwidths of ~1.3 nm and ~1.6 nm, respectively. Such broadband flat-top optical response improves the tolerance to the light source wavelength fluctuation of ± 6 Å and temperature variation of ± 6 °C. Dynamic characterizations show the device with switching power of ~37 mW, switching time of ~7 μs, and on/off ratio of > 30 dB. For performance comparison, we also demonstrate a carrier injection-based electro-optical q-DOS by integrating lateral P-i-N junction with the microring resonator, which significantly reduces power consumption to ~12 mW and switching time to ~0.7 ns only.
在这项工作中，我们展示了一种基于硅微环谐振器耦合马赫曾德尔干涉仪的热光准数字光开关（q-DOS）。光传输光谱显示出盒状响应，其1 dB和3 dB带宽分别约为1.3 nm和1.6 nm。这种宽带平顶光响应提高了对±6 Å光源波长波动和±6 °C温度变化的容忍度。动态特性表明，该器件的开关功率约为37 mW，开关时间约为7 μs，开/关比大于30 dB。为了进行性能比较，我们还通过将横向P-i-N结与微环谐振器集成，展示了一种基于载流子注入的电光q-DOS，它仅将功耗显著降低至约12 mW，开关时间缩短至约0.7 ns。
