publication 2012 Physical Layer Monitoring Techniques for TDM-Passive Optical Networks: A Survey more of publication Probing the Limits of PON Monitoring Using Periodic Coding Technology by Rad, M. M., Penon, J., Fathallah, H. A., LaRochelle, S., Rusch, L. A. 2011 Interleaved Polling Versus Multi-Thread Polling for Bandwidth Allocation in Long-Reach PONs by Fathallah, H., Mouftah, H., Helmy, A. 2012 Passive Optical Network Monitoring: Challenges and Requirements by Rad, M. M., Fouli, K., Fathallah, H. A., Rusch, L. A., Maier, M. 2011