Wang Jing, Xuan Yi, Qi Minghao, Huang Haiyang, Li You, Li Ming, Chen Xin, Sheng Zhen, Wu Aimin, Li Wei, Wang Xi, Zou Shichang, Gan Fuwan
Opt Lett. 2015 May 1;40(9):1956-9. doi: 10.1364/OL.40.001956.
A broadband and fabrication-tolerant on-chip scalable mode-division multiplexing (MDM) scheme based on mode-evolution counter-tapered couplers is designed and experimentally demonstrated on a silicon-on-insulator (SOI) platform. Due to the broadband advantage offered by mode evolution, the two-mode MDM link exhibits a very large, -1 dB bandwidth of >180 nm, which is considerably larger than most of the previously reported MDM links whether they are based on mode-interference or evolution. In addition, the performance metrics remain stable for large-device width deviations from the designed valued by -60 nm to 40 nm, and for temperature variations from -25°C to 75°C. This MDM scheme can be readily extended to higher-order mode multiplexing and a three-mode MDM link is measured with less than -10 dB crosstalk from 1.46 to 1.64 μm wavelength range.
基于模式演化反锥形耦合器，设计了一种宽带且易于制造的片上可扩展模式分割复用（MDM）方案，并在绝缘体上硅（SOI）平台上进行了实验验证。由于模式演化带来的宽带优势，双模MDM链路展现出大于180 nm的非常大的-1 dB带宽，这比大多数先前报道的MDM链路都要大得多，无论它们是基于模式干涉还是模式演化。此外，对于器件宽度相对于设计值有-60 nm至40 nm的较大偏差，以及温度在-25°C至75°C范围内变化时，性能指标仍保持稳定。这种MDM方案可以很容易地扩展到高阶模式复用，并且在1.46至1.64μm波长范围内测量到的三模MDM链路的串扰小于-10 dB。
