Performance Analysis of 1310/1490 Nm Demultiplexer based on Multimode Interference Coupler for PON Topics: Communications and Switching Photonics; Fiber Optics devices; Optical Materials and Devices; Photonic and Optoelectronic Materials and Devices In Proceedings of the 4th International Conference on Photonics, Optics and Laser Technology PHOTOPTICS - Volume 1, 223-226, 2016 , Rome, Italy