'A'
Title: Compact tunable three-dimensional polymer optical waveguide comb filter
Author(s): Wu Q (Wu, Qiang), Chan HP (Chan, H. P.), Chu PL (Chu, Pak L.), Yu CX (Yu, Chongxiu), Hand DP (Hand, D. P.)
Source: OPTICS COMMUNICATIONS 277 (1): 89-92 SEP 1 2007
Authors' addresses:
Heriot Watt Univ, Appl Opt & Photon Grp, Sch Engn & Phys Sci, Edinburgh EH14 4AS, Midlothian Scotland
City Univ Hong Kong, Optoelect Res Ctr, Dept Elect Engn, Hong Kong, Hong Kong Peoples R China

'B'
Title: Polarization-independent tunable fiber comb filter
Author(s): Lee YW, Han KJ, Jung J, Lee B
Source: IEEE PHOTONICS TECHNOLOGY LETTERS 16 (9): 2066-2068 SEP 2004