Distributed Fiber Optic Sensor Market Size Analysis by Scattering Process (Rayleigh Scattering Effect, Raman Scattering Effect, Interferometric Distributed Optical-Fiber Sensor, Distributed Fiber Bragg Grating Sensor, Brillouin Scattering Effect), Operating Principle (Optical Time Domain Reflectometry, Optical Frequency Domain Reflectometry, Optical Low Coherence Reflectometry), Fiber Type (Multi-Mode, Single Mode), Vertical (Oil & Gas, Energy and Utility, Military, Civil Engineering), Application (Temperature Sensing, Acoustic Sensing, Strain Sensing, Pressure Sensing) - Global Industry Revenue Estimation to 2030