By Glen Kramer
The 1st booklet to provide an explanation for the EPON structure, examine its functionality, and annotate the traditional. aimed toward any engineer or graduate pupil development gear for broadband entry or merchant providing such provider.
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Additional info for Ethernet Passive Optical Networks
Sample text
These techniques include full-duplex transmission mode, prioritization, and virtual LAN (VLAN) tagging. Ethernet is an inexpensive technology, which is ubiquitous and interoperable with a variety of legacy equipment. It is not surprising that Ethernet is poised to become the architecture of choice for next-generation subscriber access networks. 3 GFP PON In the presence of ever-growing traffic volume and the emergence of 1 Gbps EPON specification, the FSAN group has realized the need for architecture capable of higher bit rate and improved efficiency for data traffic.
2 Optical Splitters/Combiners A PON employs a passive (not requiring any power) device to split the optical signal from one fiber into several fibers and, reciprocally, to combine optical signals from multiple fibers into one. This device is an optical coupler. In its simplest form, an optical coupler consists of two fibers fused together. Signal power received on any input port is split between both output ports. The power splitting ratio of a splitter can be controlled by the length of the fused region and therefore is a constant parameter.
In 1997 the FSAN group submitted the BPON specification proposals to International Telecommunications Union—Telecommunication Standardization Sector (ITU-T) for a formal ratification. 1 Broadband Optical Access Systems Based on Passive Optical Networks (PON). This document was approved in 1998 and specifies the optical physical layer of the APON/BPON system. 2 ONT Management and Control Interface Specification for B-PON. Adopted in 1999, this recommendation defines a common optical network terminal (ONT) management control interface.
