26 results about "Optical medium" patented technology

An optical medium is material through which electromagnetic waves propagate. It is a form of transmission medium. The permittivity and permeability of the medium define how electromagnetic waves propagate in it. The medium has an intrinsic impedance, given by η=Ex/Hy where Eₓ and Hy are the electric field and magnetic field, respectively. In a region with no electrical conductivity, the expression simplifies to: η=√(μ/ɛ) .