[1] Hirabayashi K, Tsuda H, Kurokawa T. Narrow band tunable wavelength-selective filters of FP interferometers with a liquid crystal intracavity. IEEE Photon. Tchnol. Lett., 1999, 3(3):213～215

[2] Cheung K W, Choy M M, Kobrinski H. Electronic wave-length tuning using acousto-optic tunable filter with broad continuous tuning range and narrow channel spacing. IEEE Photon. Technol. Lett., 1989, 1(1):38～40

[3] Patel J S, Maceda M W. Tunable polarization diversity liquid crystal wavelength filter. IEEE Photon. Technol. Lett., 1991, 3(8):213～215

[4] Patel J S, Lee S D. Electrically tunable and polarization insensitive FP etalon with a liquid crystal film. Appl. Phys. Lett., 1991, 58(22):2491～2493

[5] Matsumoto S, Hirabayashi K. Tunable wavelength filter using nano-sized droplets of liquid crystal. IEEE Photon. Technol. Lett., 1999, 11(4):442～444

[7] Li Guohua, Pang Yantao. Study of tunable liquid crystal filter. J. Optoelectronics·Laser, 2001, 12(2):141～143

[8] Shen Ruilin, Song Kai, Zhang Yangan et al..Experimental investigation of a liquid crystal etalon filter. Chinese J. Laser, 1997, 24(1):41～45