Fundamentals of Nonlinear Optics, 2nd Edition

Appendix E: Optical Fibers—Slowly Varying Envelope Equations

An optical fiber in its simplest form consists of a core and cladding glass, as illustrated in Figure E.1. The core glass has a refractive index that is higher than the cladding index so as to confine the electromagnetic wave near the core region. The electric field in an optical fiber expressed as an angular frequency-dependent function expanded around the signal angular frequency, ω0, is written as

Figure E.1 Illustration of a simple optical fiber with a core and cladding.

where ...