Govind P Agrawal. Nonliner fiber optics[M]. Second Edition.New York: The Institute of Optics University of Rochester,1995.
[2]
Fabrizio Forghieri, Tkach R W, Chraplyvy A R. WDM systems with unequally spaced channels[J]. Lightwave Technology, 1995,13(5):889-897.
[3]
Fabrizio Forghieri, Tkach R W, Chraplyvy A R, et al. Reduction of four-wave mixing crosstalk in WDM systems using unequally spaced channels[J]. IEEE Photonics Technology Letters, 1994,6(6):754-756.