Optical Waveguide Market Size and Forecasts (2021 - 2031), Global and Regional Share, Trends, and Growth Opportunity Analysis Report Coverage : By Type (Planar Waveguide, Channel Waveguide); Material (Glass, Polymer, Others); Propagation (Single-mode, Multi-mode); Refractive Index (Metro and Long-haul Optical Interconnect, Board-to-board and Rack-level Optical Interconnect, Chip- and Board-level Optical Interconnect); Industry (Telecommunication, Medical, Metrology, Aerospace and Defense, Consumer Electronics, Industrial, Others)