Jin Boyuan, Yuan Jinhui, Yu Chongxiu, Sang Xinzhu, Wu Qiang, Li Feng, Wang Kuiru, Yan Binbin, Farrell Gerald, Wai P K A
Opt Express. 2015 May 4;23(9):11141-51. doi: 10.1364/OE.23.011141.
A novel photonic fractional-order temporal differentiator is proposed based on the inverse Raman scattering (IRS) in the side-coupled silicon microring resonator. By controlling the power of the pump light-wave, the intracavity loss is adjusted and the coupling state of the microring resonator can be changed, so the continuously tunable differentiation order is achieved. The influences of input pulse width on the differentiation order and the output deviation are discussed. Due to the narrow bandwidth of IRS in silicon, the intracavity loss can be adjusted on a specific resonance while keeping the adjacent resonances undisturbed. It can be expected that the proposed scheme has the potential to realize different differentiation orders simultaneously at different resonant wavelengths.
基于侧面耦合硅微环谐振器中的逆拉曼散射（IRS），提出了一种新型光子分数阶时间微分器。通过控制泵浦光波的功率，可以调节腔内损耗并改变微环谐振器的耦合状态，从而实现连续可调的微分阶数。讨论了输入脉冲宽度对微分阶数和输出偏差的影响。由于硅中IRS的带宽较窄，可以在特定谐振时调节腔内损耗，同时保持相邻谐振不受干扰。可以预期，所提出的方案有潜力在不同谐振波长下同时实现不同的微分阶数。
