EPON Ethernet-based PON technology is used in the PON physical layer technologies used in the data link layer of the Ethernet protocol, the topology using the Ethernet PON access, using an optical fiber to achieve full service access data, voice and video . Next, communication is easy to introduce daylight EPON OLT optical module .
EPON Product description:
EPON reception signals transmitted on a single fiber, this mechanism is called the single-fiber bidirectional transmission mechanism. WDM technology using WDM, different wavelengths ( downlink 1490nm, 1310nm upstream achieve Bidirectional transmission), and transmit uplink and downlink data streams on an optical fiber not affect each other, and define a 1000 BASE-PX-10 U / D and 1000 BASE-PX-20 U / D PON two kinds of optical interfaces, each supporting 10 km, and a maximum transmission distance of 20 km.
EPON provide 1.25 Gbit / s uplink and downlink bandwidth is based on Ethernet passive optical network, the OLT Ethernet encapsulation, Ethernet frame structure is transmitted, the frame format is based on EPON 802.3.
By convention the IEEE802.3ah-2004: OLT side transmit power is greater than 2dBm, receiver sensitivity <-27dBm; transmit power is greater than for ONU -1dBm, receiver sensitivity <-24dBm, loss of the entire optical link uplink <24dB, downlink <23.5dB . EPON upstream and downstream 1310nm 1490nm wavelength G.652 fiber loss is about 0.3dB / km. Fully visible for long distances EPON power budget is the most important factor.
Easy communication daylight EPON Product Features
Bidirectional data links symmetrical ①1.25Gbps
②3.3V operating voltage
③DDM digital diagnostic monitoring functions
④ anti-electromagnetic interference, anti-static protection
⑤ comply with IEC-60825 a laser safety standards
Commercial work ⑥ Temperature: 0 ℃ ~ 70 ℃
EPON OLT optical module applications
EPON technology
① users to the public, may be employed FTTH and FTTB / C / Cab-peer application mode.
② For business users, according to different business needs and user scale, take a different implementation models, such as FTTO, FTTB or FTTC.
Relatively high application ③ "global eye" and the bandwidth (in particular upstream bandwidth) requirements can be used as an access means EPON. PON network to replace the original analog scheme 2 / Layer 3 switches, but also save a lot of fiber optic transceivers, and no video Optical apparatus.
④ In the shortage of the fiber resources, such as villages engineering may be employed a multi-stage spectral power and spectral range of the optical splitter embodiment, i.e., in the case of unequal power using only a few optical cable core or resources pointwise converging optical splitter.
EPON access network to fully meet customer demand for bandwidth, flexible and easy dynamically allocate bandwidth according to user needs change in the lives of community residents become more comfortable, safe and convenient.