Recent Progress in Applications of Optical Multimode Devices Using Planar Lightwave Circuits

摘要

The optical propagation mode—the electromagnetic field distribution of light propagating through a waveguide—is attracting attention as a new degree of freedom of light and is expected to provide new functions and improved optical characteristics in optical devices and systems. In this article, we introduce optical device technologies that utilize the optical propagation mode in an integrated optical waveguide component called a planar lightwave circuit.