PRINCIPLES OF OPTICAL WAVEGUIDING OptoSci's ED-WAVE educator kit enables the student to investigate the conditions under which optical waveguiding occurs in dielectric media, and then appreciate how these fundamental principles are applied by examining mode propagation in multimode and singlemode planar waveguides. Support software for ED-WAVE: SWAN(MIC): Software for Waveguide Analysis (Modal Index Calculator) The experimental investigation addresses: Reflection and refraction Fresnel relationships Brewster's angle, the critical angle and total internal reflection Prism coupling and waveguide measurements Step and graded index waveguides Measurement and analysis of mode spectra Mode effective indices and index profile determination Design of single mode waveguides