Optical soliton transmission system using optical amplifiers

摘要

In an optical soliton transmission system an optical transmitter (2) generating short pulses is coupled to a glass fibre cable (4) comprising sections of glass fibre (7, 9, 11, 13, 15) with interspaced semiconductor laser amplifiers (8, 10, 12, 14). An optical receiver (6) is connected to the end of the glass fibre cable (15). In optical soliton transmission Erbium doted fibre amplifiers and dispersion shifted fibre are currently used in the 1.5 mu m wavelength region. However, by utilizing standard fibre in the 1.3 mu m wavelength region it is possible to use a lower soliton power compared with a state-of-the-art transmission system.