'A'
Title: Design of cascaded volume holographic gratings to increase the number of channels for an optical demultiplexer
Author(s): Do DD (Do, Duc Dung), Kim N (Kim, Nam), Han TY (Han, Tae Young), An JW (An, Jun Won), Lee KY (Lee, Kwon Yeon)
Source: APPLIED OPTICS 45 (34): 8714-8721 DEC 1 2006
Authors' addresses:
LGS Corp, Res Ctr, Hwaseong 445812, Gyeonggi South Korea
Suncheon Natl Univ, Dept Elect Engn, Sunchon 540742, Jonnam South Korea

'B'
Title: Photopolymer-based demultiplexers with superposed holographic gratings
Author(s): Kim T, Chung SH, Han SH, Lee B
Source: IEEE PHOTONICS TECHNOLOGY LETTERS 17 (3): 618-620 MAR 2005