Patent ID: 6693740
Filing Date: 2004-02-17
Classification: G02B,H01S,H04B

Abstract:
A discrete Raman amplifier comprising: (i) an input port providing optical signal to said amplifier; (ii) an output port providing amplified optical signal out of said amplifier; (iii) at least two optical fibers, one optical fiber having positive dispersion D1 of greater than 10 ps/nm/km in a 1550 nm to 1620 nm wavelength range, and length of 5 m to 2.5 km, the other fiber having a negative dispersion D2 of less than âˆ’5 ps/nm/km in a 1550 nm to 1620 nm wavelength range and length of 5 m to 2.5 km, wherein the length of each of said optical fiber is chosen to provide said amplifier with a predetermined amount of dispersion.