Optical waveguides connection with self-correction of mode field mismatches

研究了利用两面位相共轭反射镜(PCM)之间的位相共轭波(PCVV)的振荡来实现两个不同模场光波导的自动连接。我们的研究发现了以下结果。(从通过两个不同的波导传输的波产生的DPCW自动校正模场差。(2)在距离和轴线错位等连接失配情况下，两波导间传输波的PCW反射率对距离具有相同的值，对归一化轴心半径错位具有几乎相同的值。(3)夹杂物的光学衰减值影响着两面相变材料之间的PCW振荡。衰减的容限取决于相变调制器的S参数，该参数由相互作用系数和相互作用长度决定。光折变晶体的衰减值估计为40%。(4)如果公差控制在40%以内，实际加工系统的实现是困难的。人工产生的装运废物可能使我们能够避免困难。证实了DMD型空间光调制作为PCM输入器件的可行性。

Automatic connection of two different mode field waveguides by oscillation of the phase conjugate waves(PCVV) between two faced phase conjugate mirrors(PCM) is studied. Our studies revealed the following results. (DPCW generated from the transmitted waves through two different waveguides corrects the mode field differences automatically. (2)The PCW reflectivities of the transmitted waves between two waveguides with connection mismatches like the distances and axis misalignments have the same values against the distances, and have the almost same values against tine normalized axis misalignment by the core radius. (3) The PCW oscillation between two faced PCM is influenced by the optical attenuation values of the inclusions. The tolerance limit of the attenuation depends on the s parameter of the PCM, and the parameter is decided by the interaction coefficient and the interaction length. The estimated attenuation value from the hotorefractive crystal is 40%. (4) The realization of the practical fabrication system is difficult if the tolerance is restricted within 40%. The artificial generation of the PCW may enable us to avoid the difficulties. The feasibility of the DMD type spatial light modulation as the input device to the PCM is confirmed.