1 x 8 channel power splitter using a multimode interference coupler in InP/InGaAsP

InP/InGaAsP eight-channel multimode interference (MMI) power splitters were successfully demonstrated. Optical transmission characteristics were measu red on a 1 x 8 splitter, by means of near-field images with varying wavelen gth or output power measurement for transverse electrical/transverse magnet ic (TE/TM) modes. On the basis of our results, a I x 8 MMI power splitter i s considered to have good power balance at each channel within a +/- 1 dB i mbalance in the wavelength range of 60 nm at the centered wavelength of 154 0 nm for all incident modes.