【摘要】 利用多载流子模型及单轴对称和光激励机理 ,从理论上计算了经热及电场诱导后的石英光纤的电光系数γ与D型光纤的距离d、诱导时间t和外加电压V的关系。结果表明 ,尽量缩短d并在适当时间内诱导 ,能有效提高电光系数 ;电光系数与外加电压近似平方根关系 ;γ33 与γ1 3 的比值非常接近 3。理论结果与实验报道相当一致更多还原

【Abstract】 By using the multiple carrier model and uniaxial symmetry and photoinduced mechanisms, the relationships of electrooptic coefficient γ with the distance d of D fiber, poling time t and applied voltage V in the silica fiber after the thermal/electric field poling (TEFP) are theoretically calculated. The results show that if d is short enough and poling time is suitable, the electrooptic coefficient can effectively be increased; the electrooptic coefficient is approximately proportional to the square root of the applied dc voltage. The ratio of γ 33 /γ 13 approaches to 3. The theoretical results are well consistent with experimental reports.更多还原