7K.O.Hill,B Malo,F Bilodeau etal.Bragg gratings fabricated in monomode photosensitive optical fiber by UV exposure through a phase mask[J].Appl Phys Lett.1993:1035.
8WU Ling,PAN Wen na,YIN Zong min etal.Application Research of Fiber Gratings[J].0pical Fiber&Electric Cable.2005(1):7-8.
9G.Meltz,M.M.Morey and W.H.Glenn."Formation of Bragg gratings in optical fibers by a transverse holographic method," Opt.lett.1989:823-825.