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首页> 外文会议>Conference on Integrated Optics Devices Ⅴ Jan 23-25, 2001, San Jose, USA >Integrated optical cross strip interferometer
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Integrated optical cross strip interferometer

机译：集成式光学交叉带干涉仪

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摘要

A thick, bimodal segment of specific length and height between two single mode sections of a planar waveguide can serve as an integrated optical interferometer. It is realized by etching a wide strip from a guiding film. A - vertically guided, laterally unguided - beam of light is then made to traverse the strip perpendicularly. For a wide range of materials the structure can be dimensioned such that it shows the proper behaviour of an interferometer: Depending on the phase gain of the two modes in the thick region, the guided light interferes either almost completely destructively at the transition to the output segment, i.e. the power is radiated away into the substrate and cover regions, or constructively, i.e. most of the power passes the device. We believe that for certain applications structures of this kind can be a simple substitute for instruments like Mach-Zehnder interferometers or directional couplers. This is illustrated by two numerically simulated examples: A polarizer constructed from silicon based waveguides, which offers 30 dB polarization discrimination and 0.1 dB insertion loss with a total length of only 10 micrometers, and a proposal for an integrated magnetooptic isolator experiment, where the freedom in the lateral direction can be exploited for a proper tuning of the device.
机译：平面波导的两个单模部分之间具有特定长度和高度的厚双峰段可以用作集成光学干涉仪。它是通过从引导膜上蚀刻一条宽条来实现的。然后，使垂直引导，横向未引导的光束垂直穿过带。对于多种材料，可以对结构进行尺寸设计，以使其显示干涉仪的正确性能：根据厚模式中两种模式的相位增益，引导光在过渡到输出时几乎完全破坏性地干涉分段，即功率被辐射到衬底和覆盖区域中，或者相长地，即大部分功率通过设备。我们相信，对于某些应用，这种结构可以简单地替代诸如Mach-Zehnder干涉仪或定向耦合器之类的仪器。这可以通过两个数值模拟的例子来说明：一个由硅基波导构成的偏振器，其偏振分辨力为30 dB，插入损耗为0.1 dB，总长度仅为10微米，并且提出了集成磁光隔离器实验的建议，可以利用横向方向上的角度来适当调整设备。

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