Ulrich F, Chen D
Appl Opt. 1974 Aug 1;13(8):1850-2. doi: 10.1364/AO.13.001850.
High refractive index prisms have been used to couple optical beams into the thin film waveguides. To scan through various propagating modes normally requires rotating and repositioning of the prism-waveguide assembly. We have found that the required adjustment of the prism-position can be eliminated during the scanning of the various modes if the prism is properly offset with respect to the rotational axis. An analysis and a computer program are given for the calculation of this prism offset position on the basis of minimum deviation within the specified limits of the prism rotational angle.
高折射率棱镜已被用于将光束耦合到薄膜波导中。通常，要扫描各种传播模式需要旋转和重新定位棱镜 - 波导组件。我们发现，如果棱镜相对于旋转轴适当偏移，那么在扫描各种模式时就可以消除对棱镜位置的所需调整。给出了基于棱镜旋转角度指定范围内的最小偏差来计算该棱镜偏移位置的分析和计算机程序。
