| 摘要 |
<p>An optical amplifier (10) comprises: (i) an input port (20a) for providing optical signal (S) to the amplifier; (ii) an output port (20b) for providing amplified optical signal out of the amplifier; (iii) at least two optical fibers, one optical fiber having positive dispersion D1 of greater than 10 ps/nm/km in a 1550 -1620 nm wavelength range, wherein the length of each of said optical fiber is chosen to provide the amplifier with a predetermined amount of dispersion.</p> |
