Optical waveguide device for integrated optics - has strip waveguides at 90 degrees to one another on either side of mirrored bend

摘要

The waveguide device provides an abrupt change of direction for the light fed along a strip waveguide using a bend (K) in the latter and a reflective mirror surface (Sp) across the outer edge of the bend (K). Pref. the waveguide sections on either side of the bend are formed integral with the latter as strip waveguides (Lx,Ly) extending at 90 degrees to one another, with the bend (K) having a higher refractive index (n3) than the strip waveguides. ADVANTAGE - Reduced light losses.