Detailed analysis of EPON vs GPON
EPON and GPON have their own feature. In terms of performance, GPON is superior to EPON, but EPON has advantages in time and cost. GPON is adapting to the market trend. Looking forward to broadband access market in the future, they should be mutually coexisting and complementary. For customers those ask for high bandwidth, multi-service, and high requirements on security and QoS and take ATM technology as the backbone network, GPON will be more suitable. For Customer base that is price sensitive and does not require high QoS, and security, EPON will be the dominant one.
What is PON?
Broadband access technology is being updated day by day, and it is destined to become an upwardly developing market. At present, the mainstream in China is still ADSL technology, but more and more equipment manufacturers and operators have move their sights on optical network access technology.
Copper prices continue to rise, fiber optic cable prices continue to fall, and the ever-growing IPTV and video game services' huge demand for bandwidth is driving the development of FTTH. The bright prospects of replacing copper cables and wired coaxial cables with optical cables, the integration of telephone, cable TV, and broadband data networks have become clear.
PON (Passive optical network) is the main technology to realize FTTH fiber to the home, providing point-to-multipoint fiber access. As shown in Figure 1, PON consists of OLT (optical line terminal) on the office side and ONU (optical network unit ) and ODN (Optical Distribution Network). Generally, the downlink adopts TDM broadcast mode and the uplink adopts TDMA (Time Division Multiple Access) mode, forming a point-to-multipoint tree-shaped topology. The biggest bright spot of PON as an optical access technology is "passive". ODN does not contain any active electronic devices and electronic power supplies. It is all composed of passive devices such as optical splitters, and the management, maintenance, and operation costs are lower.
Technical features of EPON and GPON
EPON aims to be compatible with the current Ethernet technology. It is the continuation of the 802.3 protocol in the optical access network. It fully inherits the advantages of low price, flexible protocol, and mature technology of Ethernet, and has a wide market and good compatibility. GPON is positioned in the telecommunications industry for multi-service, full-service access with QoS guarantees, and strives to find the best, full-service, and most efficient solution.
The technical features of EPON are as below:
1) Ethernet is the best carrier for carrying IP services;
2) Simple maintenance, easy expansion, and easy upgrade;
3) EPON equipment is mature and available. EPON has already laid out millions of lines in Asia. The third generation of commercial chips has been launched. The prices of related optical modules and chips have dropped significantly, reaching the level of large-scale commercial use, which can meet the requirements of recent broadband services.
4) The EPON protocol is simple and the implementation cost is low, the equipment cost is low. It is the most suitable technology for metro access network
5) It is more suitable for China, where the metropolitan area network does not have the equipment baggage of ATM or BPON;
6)More suitable for the future, IP bears all services, Ethernet bears IP services.
Toputel Fast Ethernet SFP Optical Transceiver sepcification Quality Optical Transceiver original manufacturer China-Toputel Technology
The technical features of GPON are as below:
1) Access network for telecom operations
2) High bandwidth: line rate, downlink 2.488Gb/s, uplink 1.244Gb/s;
High transmission efficiency: 94% downstream (actual bandwidth up to 2.4G) upstream 93% (actual bandwidth up to 1.1G);
3) Full service support: The G.984.X standard strictly defines the support for all carrier-class services (voice, data and video);
4) Strong management ability: rich functions, sufficient OAM domains are reserved in the frame structure, and OMCI standards have been formulated;
5) High service quality: multiple QoS levels, which can strictly guarantee the bandwidth and delay requirements of the business.
6) Low overall cost: long transmission distance, high splitting ratio, effective allocation of OLT costs, and lower user access costs.
Toputel Gigabit Ethernet SFP Optical Transceiver sepcification Quality Optical Transceiver original manufacturer China-Toputel Technology
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