China-Korea submarine fibre-optic cable system was declared to be abandoned in July 2005,and is the first abandoned international submarine fibre-optic cable system in China.

The application of DFRA in repeaterless submarine fiber optic cable communications is also described.

Submarine Cable Route Survey Vessel Design;

Mathematical model for control of fiber excess length of submarine cables;

Localization and testing for submarine cable fault;

Study on passive detection with submarine optical fiber cable;

ADUC812 and its application in on-line supervision system of insulation status of the submarine optical fiber cable using ADuC812;

A novel submarine optical fiber cable monitoring system;

Technology of positive fault detection for optical submarine cable and its realization;

Study on the active detection technology of optical submarine cables;

The general requirements for, characteristics and key manufacturing techniques of optical submarine cables are presented.

The supervision of submarine fiber optic cables is a very complex problem.

The passive detection technology for submarine fiber optic cable is introduced.

First a brief description of the com position of repeaterless submarine fiber optic cable communication systems is given.