Abstract:
A study was made of additional optical losses in the range from – 196 °C to + 85 °C observed in a fiber-optic cable containing different types of waveguides. The use of waveguides with noncrystallizing primary and fluoroplastic secondary claddings made it possible to ensure that the additional losses in this cable were less than 1 dB/km at temperatures in the range from – 120 °C to + 85 °C.