Basic Research on Three-Dimensional Free-Space Optical Interconnects Using Holographic Optical Elements

本文以研制一种用于三维自由空间光互连的新型全息元件为目标，进行了以下研究工作：1。提出了一种新的阵列照明器的实现方案。其用于将光功率分配给需要光功率源的光逻辑门或EEPROM器件的阵列。该方案是基于集成光学，并具有系统变得紧凑，对准问题可以大大简化的优点. 1光栅耦合器阵列照明器的设计，并建立了预测照明器性能的理论我们提出了光栅耦合器阵列照明器的设计原理。我们已经表明，它是可能的设计一个阵列照明器，产生均匀的光束与100%的功率效率。我们还证明了光束数目和光束压缩比的乘积成为一个常数，这是所提出方案的基本限制.阵列照明器的制作和实验验证的原则的有效性我们首先制作了一维阵列照明器的基础上提出的原则。然后，将两个一维阵列照明器组合成二维阵列照明器。通过在阵列照明器中引入激光束，实验证明可以获得二维阵列光束。

The research was carried out with the aim of developing a novel holographic element for three-dimensional free-space optical interconnects, and the following results have been obtained:1. Proposal of the basic principle of an array illuminatorWe have proposed a new scheme for implementing array illuminators. which are used to distribute optical power to an array of optical logic gates or bistable devices that require optical power supplies. The scheme is based on integrated optics, and has the advantage that the system becomes compact and that alignment problems can be greatly alleviated.2. Design for an array illuminator using a grating coupler, and establishment of a theory to predict the performance of the illuminatorWe have proposed a design principle for an array illuminator using a grating coupler. We have shown that it is possible to design an array illuminator that generate uniform beams with 100% power efficiency. We have also shown that the product of the number of beams and the beam compression ratio becomes a constant, which sets the fundamental limitation of the scheme proposed.3. Fabrication of array illuminators and experimental demonstrations of the validity of the principfeWe first fabricated one-dimensional array illuminators based on the proposed principle. Then, we made a two-dimensional array illuminator by combining the two one-dimensional array illuminators. By introducing a laser beam into the array illuminator, we have experimentally demonstrated that a two-dimensional array beams can be obtained.