Tanaka N, Banno T, Takahashi K, Shiota T, Inada K
Appl Opt. 1990 Dec 1;29(34):5090-5. doi: 10.1364/AO.29.005090.
A MgO/Ti bilaterally diffused optical waveguide is proposed. It features controlling the waveguide spot size and strengthening the optical confinement. It is experimentally shown that the coupling loss with single-mode fiber is reduced to 0.6 dB/facet. The bending loss is also suppressed from 2.2 dB of the Ti diffused waveguide to 0.2 dB at a 30-mm bending radius. The performance of the switch using this method is demonstrated. Total insertion loss is 2.6 dB. Driving voltage is 5.6 V with no degradation of the EO effect.
提出了一种MgO/Ti双边扩散光波导。它具有控制波导光斑尺寸和增强光限制的特点。实验表明，与单模光纤的耦合损耗降低至0.6 dB/面。弯曲损耗也从Ti扩散波导的2.2 dB抑制到弯曲半径为30 mm时的0.2 dB。展示了使用该方法的开关性能。总插入损耗为2.6 dB。驱动电压为5.6 V，电光效应无退化。
