Sentence 1: An optical waveguide is a rectangular structure that guides electromagnetic waves in the physical spectrum . Ordinary types of optical waveguides include optical fibres and optical waveguides .
Sentence 2: An optical waveguide is a rectangular structure that guides electromagnetic waves in the physical spectrum . Common types of optical waveguides include optical fiber and optical waveguides .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?