【摘要】 提出一种旁路结构聚合物热光可变光衰减器 (variable optical attenuator,VOA)的设计 ,采用旁路波导可提高衰减效率并降低串扰 .软件模拟验证 ,无间距旁路 VOA衰减可达 2 8d B,比未加旁路波导的相同结构 VOA增加10 d B,但同时插入损耗增加 0 .3d B,串扰低于 - 4 4 d B,理论功耗为 4 0 m W.采用倒脊形结构研制了原理性的热光聚合物 VOA,测得衰减大于 11d B,相应输入电流为 6 6 m A,具有明显的热光效应 .更多还原

【Abstract】 A VOA(variable optical attenuator) is presented based on thermo optic polymer,in which a bypassing guide was adopted to improve attenuating efficiency and lower crosstalk as well.Simulations demonstrate that the attenuation in case of no space between passing waveguide and multi mode region can reach 28dB,increasing by 10dB than no passing waveguide case.Simultaneously,insertion loss increases only by 0 3dB,crosstalk is below -44dB and theoretic power consumption is about 40mW.The inverse rib structure is adopted,working out thermo optic polymer based VOA.Measured attenuation is higher than 11dB,the responding input current is about 66mA.From measurement obvious thermo optic effect is observed.更多还原