The nonlinear mechanism is the excitonic bandbroadening.
非线性机制为激子带展宽。
2
Based on numerical and experimental results, for separation channels with a width of 80/ ttn , 31% is the optimal constriction ratio to reduce bandbroadening by introducing narrowed turns.
As a result, we accurately estimate the effective signals in high frequency band and better the noise suppression, thus broadening the effective frequency band.