Global Fiber Optic Preform Market Assessment, By Fabrication Process [Inside Vapor Deposition, Outside Vapor Deposition, Modified Chemical Vapor Deposition, Plasma Activated Chemical Vapor Deposition, Vapor Phase Axial Deposition, Others], By Type [Single mode, Multi-mode], By End-user [Telecommunication, Healthcare, BFSI, Oil and Gas, Military and Defense, Aviation, Others], By Region, Opportunities and Forecast, 2017-2031F