Design and fabrication of a 1-by-4 multimode interference splitter based on InP

Abstract

A strongly guided InP/InGaAsP multimode interference power splitter is designed and simulated by using 3D FD-BPM method. A 1-by-4 multimode interference power splitter is fabricated in terms of the simulation result. The device has 40nm available bandwidth and 2.6dB pass band flatness around 1550nm. Furthermore, the insertion loss is no higher than 10dB at the designed wavelength 1550nm.