'A'
Title: A cascadable approach to produce widely selectable spectral spacing in birefringent comb filters
Author(s): Fok MP (Fok, Mable P.), Shu C (Shu, Chester), Tang WW (Tang, Wing-Wa)
Source: IEEE PHOTONICS TECHNOLOGY LETTERS 18 (17-20): 1937-1939 SEP-OCT 2006  
Chinese Univ Hong Kong, Dept Elect Engn, Shatin, Hong Kong Peoples R China
Chinese Univ Hong Kong, Ctr Adv Res Photon, Shatin, Hong Kong Peoples R China

'B'
Title: Multiwavelength-switchable SOA-fiber ring laser based on polarization-maintaining fiber loop mirror and polarization beam splitter
Author(s): Lee YW, Jung J, Lee B
Source: IEEE PHOTONICS TECHNOLOGY LETTERS 16 (1): 54-56 JAN 2004