Thermal Distribution Change of Optical Fiber Terminal Based NG-PON2 Link Security Monitoring Technology.

Physical fiber link security issues of the next generation of passive optical network (NG-PON2) have long been a concern. A fiber bending heat loss model have established, and proposed a method to monitor eavesdropping of transmission information in the fiber by detecting the thermal distribution of the output end of optical fiber links. Finally, the NG-PON2 link security monitoring scheme based on this method is given. The experimental results show that the proposed scheme can monitor the tapping in NG-PON2 fiber links.