eHuawei announced that they have successfully developed the industry’s largest spectral built-in optical time domain reflection tester, which maximum support is 1:64, through the network simulation, its precision is up to 5 metres. The technique breakthrough marked the eOTDR technology has reached FTTHPON network commercial networking requirements.

Embedded Optical Time Domain Reflectometre, which is short for eOTDR. It’s the utilisation of scattering light in optical fibre transmission and precision instrument, is mainly used for optical fibre quality detection and fault location, etc. Traditional external OTDR test system in PON FTTH network maintenance and fault detection, the need to change the ODN physical optical fibre connection, the system has high cost, difficult to implement.

With the development of FTTx, optical fibre developed quickly. Operators increase investments for fibre optic network year by year. How to manage cables management quickly and efficiently, to reduce OPEX, become the urgent demand of operators FTTx network construction.

Huawei eOTDR prototype through the built-in OTDR in OLTPON optical module, which can judge the fibre’s physical connection. At the same time, the built-in OTDR module and ordinary optical module size is consistent. Operators will place ordinary optical module with built-in OTDR optical module, but can not change the FTTx fibre physical network, also do not need ONT extra coordinate positioning, to avoid the external engineering of OTDR test, shorten the time needed for a fibre fault location, reduce the fibre optic fault management costs.

The industry mainstream manufacturers provide 1:8 eOTDR product ratio, after many years of technical research and experimental verification, the breakthrough to develop the  1:64 eOTDR prototype, covering the mainstream of FTTH patch cables construction scene, marked the eOTDR technology realized, breakthroughs from lab scale to commercial technological.