D. Erasme et al., EXPERIMENTAL ASSESSMENT OF THE REFLECTION OF PASSIVE MULTIMODE INTERFERENCE COUPLERS, IEEE photonics technology letters, 9(12), 1997, pp. 1604-1606
Integration of semiconductor amplifiers in integrated optical circuits
is presently possible, Reflections inside these circuits are undesire
d for they can cause unwanted oscillations, The reflection properties
of integrated passive multimode interference (MMI)-couplers have been
experimentally determined.