'A'
Title: Triple-wavelength switchable Erbium-doped fiber laser with cascaded asymmetric exposure long-period fiber gratings
Author(s): Yan M (Yan, Ming), Luo SY (Luo, Shouyu), Zhan L (Zhan, Li), Zhang ZM (Zhang, Zhiming), Xia YX (Xia, Yuxing)
Source: OPTICS EXPRESS 15 (7): 3685-3691 APR 2 2007  
Authors' addresses:
Shanghai Jiao Tong Univ, State Key Lab Fiber Opt Local Area Networks & Adv, Dept Phys, Inst Opt & Phot, Shanghai 200240, Peoples R China
S China Normal Univ, Sch Informat & Photoelect Sci & Engn, Lab Phot Informat Technol, Guangzhou 510006, Peoples R China

'B'
Title: Wavelength-switchable erbium-doped fiber ring laser using spectral polarization-dependent loss element
Author(s): Lee YW, Lee B
Source: IEEE PHOTONICS TECHNOLOGY LETTERS 15 (6): 795-797 JUN 2003