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设计了一种基于聚合物材料热光效应的1×2数字光开关(DOS)新结构。该结构将Y分叉DOS与具有引导和可变光衰减(VOA)功能的S弯曲过渡波导集成,在不增加器件结构的基础上,可大大提高开关性能,并采用填埋尖角的方法改进设计Y分叉,增大了Y分叉角度的范围,降低了工艺难度。由光束传输法(BPM)模拟表明,对于波长为1.55μm、Y分叉角度α=0.3°和计算功耗为120 mW时,该结构可实现低于-40 dB的串扰,插入损耗小于0.5 dB,具有很好的极化独立性和波谱平坦性、良好的稳定性和可重复性以及易于集成等特点。
A new structure of 1 × 2 digital optical switch (DOS) based on thermo-optic effect of polymer materials was designed. This architecture integrates Y-forked DOS with S-bend transition waveguides with guided and variable optical attenuation (VOA) capabilities that greatly improve the switching performance without the need for additional device structures and improve the performance by using landfill sharp corners Design Y fork, increasing the range of Y bifurcation angle, reducing the difficulty of the process. Simulation by beam-transfer method (BPM) shows that this structure achieves crosstalk below -40 dB for a 1.55 μm wavelength Y-bifurcation angle α = 0.3 ° and a calculated power dissipation of 120 mW with an insertion loss of less than 0.5 dB , Has a good polarization independence and spectral flatness, good stability and repeatability and easy integration and so on.