international submarine optical cable plays an increasing importance in the international communication.

single mode fiber is different from multi-mode fiber in the aspects of core diameter, light source ,bandwidth,color of jacket,modal dispersion  and price.

The optical fiber sensing technology has developed rapidly since the 1970 s with the development of the optical fiber communication technology, with the light wave as the carrier, optical fiber as medium, perception and transmission of measured signal is a new type of sensing technology, As the carr

The article mainly discuss the manufacturing technology of optical fibers.