Tunable diffraction of magnetic fluid films and its potential application in coarse wavelength-division multiplexing. - Yen-Wen Huang; Ssu-Tse Hu; Shieh-Yueh Yang; Herng-Er Horng; Jung-Chun Hung; Chin-Yih Hong; Hong-Chang Yang; Cha-Hsin Chao; Ching-Fuh Lin (Optics Letters, 2004)