We propose and experimentally demonstrate a new method for FTTx multiple access network based on self-heterodyne filtering with directly modulated uncooled DFB lasers. A factor of ten in the number of users is enabled.Introduction Passive Optical Networks (PONs) have recently been adopted as an alternative infrastructure for nextgeneration access and local area networks (LANs). The main advantage of this technology is its relatively low cost together with the support of high bandwidth (multi-Gigabit/sec) that can be transmitted over medium distances (up to 20km). However, the major drawback of PONs is the limited number of users that can be supported, as compared to WDM systems. Even by using a low cost coarse WDM (CWDM) solution, the scaling factor is limited to 8-16 channels. This is in contrast with the increasing growth rate and future projections of demand of Fiber To The Home (FTTH) networks capacity [1]. Here we propose a new multiple access scheme based on ON-OFF Shift Keying (OOK) transmission and dynamic Multi-Access Interference (MAI) noise cancellation that leads to an additional scaling of the network capacity by a factor of ten. This is on top of existing PON or CWDM-PON capacities. The multiple access capability is achieved by our proposed Self-Heterodyne Filtering (SHF) technique [2,3]. This technique requires a relatively narrow bandwidth, resulting only from the laser chirp. A partial implementation of the proposed system is carried out and demonstrated, and the results of a twochannel experiment are presented here.