[22] Shee Y G. Al-mansoori M H, Ismail A, et al. Multiwavelength Brillouin-erbium fiber laser with double-Brillouin-frequency spacing[J]. Optics Express, 19, 1699-1706(2011).
[26] Zhang X P, Xu R H. Device. -05-06[2018-3-28][P]. method for generating multi-wavelength laser larger than two times of Brillouin frequency shift interval:104600550A.(2015).