Low loss 1×2 optical coupler based on cosine S-bend with segmented waveguide

66.3: Design of Color Backlight for High Efficiency Display using Optical Waveguide Gratings

“…The interval between two waveguides is 12 μm and the total length of the incoupler area is about 1.5 cm. Though for a MMI, the correlation between wavelength and the MMI dimension cannot be neglected [4], other light separating structures such as waveguide splitters [5,10,16] will be suitable for a light source with a wide spectral range as well. In this simulation, LEDs with narrow spectral range are in use [6].…”