Optical fibre for chromatic dispersion compensation, uses rectangular profile step index with slice to provide negative chromatic dispersion

摘要

The fibre has a profile which is rectangular or trapezoid with an embedded slice and a ring. It offers negative chromatic dispersion of value greater than or equal to -150ps/(nm.km) at a wavelength of 1550 nm, and a theoretical upper wavelength cut-off at 1800 nm. The fibre is designed to compensate the chromatic dispersion within an AMF or NZ-DSF optical fibre with positive chromatic dispersion. The fibre offers negative chromatic dispersion of value greater than or equal to -150ps/(nm.km) at a wavelength of 1550 nm, and a theoretical upper wavelength cut-off at 1800 nm. At 1550 nm the fibre offers a ratio between the chromatic dispersion and the gradient of the chromatic dispersion of between 30 nm and 500 nm. The fibre has a profile which is rectangular or trapezoid with an embedded slice and a ring. The fibre offers losses which are less than 400 dB/m, and preferably less than 100 dB/m for a wavelength between 1530 nm and 1620 nm, when the fibre is wrapped on a support of radius 10 mm.