Zhao Shi, Chen Jingye, Dai Daoxin, Shi Yaocheng
Opt Lett. 2023 Sep 1;48(17):4653-4656. doi: 10.1364/OL.501010.
Low-loss and energy-efficient phase shifters are an effective tool to reduce the power consumption of large-scale photonic integrated circuits. In this work, a low-loss and power-efficient thermo-optic phase shifter has been demonstrated on the silicon-on-insulator platform. The multimode spiral waveguide is optimized to obtain lower power consumption and low cross talk. The waveguide width is beyond the single-mode region in consideration of low propagation loss. The optimized ultra-low loss 180° Bezier bends are used to further reduce the bending loss. The experimental results show that the excess loss of the phase shifter is only 0.36 dB at 1550-nm wavelength and the power consumption is 4.87 mW/π.
低损耗且节能的移相器是降低大规模光子集成电路功耗的有效工具。在这项工作中，已在绝缘体上硅平台上展示了一种低损耗且节能的热光移相器。对多模螺旋波导进行了优化，以实现更低的功耗和低串扰。考虑到低传播损耗，波导宽度超出了单模区域。采用优化的超低损耗180°贝塞尔弯曲来进一步降低弯曲损耗。实验结果表明，该移相器在1550纳米波长处的额外损耗仅为0.36分贝，功耗为4.87毫瓦/π。
