6Emori Y, Tanaka K, Namiki S. 100nm bandwidth flat gain Raman amplifiers pumped and gain-equalized by 12-wavelength-channel WDM laser diode unit[J]. Electron lett, 1999, 35 (16): 1355-1356.
7Howard K, Karsten R, Morten N, et al.. Pump interactions in a 100nm bandwidth Raman amplifier [J]. IEEEPhoton Techno Lett, 1999, 11 (5): 530-532.
8Namiki S. Recent advances in Raman ampIifiers [J].ECOC, 2001, 5:162-181.
9Agrawal G P. Nonlinear Fiber Optics [M]. New York: Academic Press, 2001. 299-300.
10Gaskill J D. Linear systems, Fourier tramforms and Optics [M]. New York: John Wiley&Sons, Inc. 1978. 361--369, 253-257.