Fiber identification below splitters using ONU MAC addressesTechnology for capturing ONU MAC address below splittersNTT Access Network Service Systems Laboratories

The technology can obtain the MAC address of the GE-ONU below an 8-branch optical splitter (SP) in FLET'S Hikari service (Gigabit Ethernet-Passive Optical Network (GE-PON) system).

This technology makes it easier to manage fibers below a splitter, which has been difficult until now, and is expected to improve the efficiency of optical line installation and cable switching work.

Optical fiber identification technology is currently widely used in the installation and maintenance of optical fiber networks. However, it is difficult to identify optical fibers below a GE-PON optical splitter using conventional methods. There is a need, therefore, for a technology that enables fiber identification below the splitter in order to improve the efficiency of fiber management in optical fiber networks

• The optical fiber is bent in a range that does not affect communication, and the MAC address is captured by detecting upstream light from the GE-ONU as it leaks from the bend.
• The technology can obtain ONU MAC address, ONU status (authentication status/link establishment status), and service usage status (Internet/ Hikari Denwa) for GE-ONU.
• It can be used for optical fibers with different outer diameters of 0.25 mm, 0.5 mm, and 0.9 mm.

• FLET's optical line service order (SO) installation work
• Optical cable obstruction relocation work below the splitter

NTT Access Network Service Systems Laboratories - Access Network Media Project