| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical transmission system with a miniaturized distribution Raman amplifier. <P>SOLUTION: A transmission line for transmitting a signal light includes a first Raman amplifying medium for distribution Raman amplification having a positive dispersion with respect to a signal light wavelength, a second Raman amplifying medium having a smaller mode field size with respect to the first Raman amplifying medium for distribution Raman amplification having a negative dispersion to the signal light wavelength, and a third Raman amplifying medium having a still smaller mode field size with respect to the second Raman amplifying medium for concentrated Raman amplification. <P>COPYRIGHT: (C)2010,JPO&INPIT |
