... architecture, in which an OLT is passively linked to the associated ONUs/ONTs through a passive optical The ComSoc Guide to Passive Optical Networks: Enhancing the Last Mile Access, First Edition Stephen ... to avoid data collisions Because of the directional nature of the passive optical splitter, each ONU/ONT transmits directly to the OLT but not to other ONUs An ONU/ONT buffers the data from the ... Stephen B The ComSoc guide to passive optical networks : enhancing the last mile access / Stephen B Weinstein, Yuanqiu Luo, Ting Wang p cm ISBN 978-0-470-16884-4 (pbk.) Passive optical networks...