[1] J. Pietzsch. Scattering matrix analysis of 3×3 fiber couplers[J]. J. Lightwave Technol., 1989, 7(2): 303~307
[2] Chen Desheng, Xiao Ling, Cui Jie et al.. Analysis of 3×3 coupler demodulation method for optical fiber interferometer and polarization fading[J]. J. Optoelectronics·Laser, 2007, 18(5): 523~525
[5] Yi Jiang. Wavelength division multiplexing addressed four-element fiber optical laser hydrophone array[J]. Appl. Opt., 2007, 46(15): 2939~2948
[6] M. D. Todd, M. Seaver, F. Bucholtz. Improved, operationally-passive interferometric demodulation method using 3×3 coupler[J]. Electron. Lett., 2002, 38(15): 784~786
[7] R. G. Priest. Analysis of fiber Interferometer utilizing 3×3 fiber coupler[J]. IEEE J. Quant. Electron., 1982, 18(10): 1601~1603
[8] A. D. Kersey, M. J. Marrone, M. A. Davis. Polarisation-insensitive fibre optic Michelson interferometer[J]. Electron. Lett., 1991, 27(6): 518~520
[9] F. Schliep. Nonideal behaviour of singlemode fibre-optic 3×3 directional couplers[J]. Electron. Lett., 1995, 31(17): 1496~1498