[1] Li Chao, Zhao Jian, Wang Wei et al. 4×100 Gbit/s long-distance quasi-single-mode bi-directional transmission with few-mode fiber[J]. Chinese J Lasers, 44, 0206001(2017).

[2] Berdagué S, Facq P. Mode division multiplexing in optical fibers[J]. Applied Optics, 21, 1950-1955(1982). http://www.opticsinfobase.org/abstract.cfm?id=25841

[3] Richardson D J, Fini J M, Nelson L E. Space-division multiplexing in optical fibers[J]. Nature Photonics, 7, 354-362(2013). http://www.researchgate.net/publication/314169588_Space-division_multiplexing_in_optical_fibers

[4] Fang Yan, Hu Guijun, Gong Caili et al. Mode demultiplexing based on cascaded independent component analysis for mode division multiplexing system with high mode group delay[J]. Chinese J Lasers, 43, 0806001(2016).

[5] Wei C, Hu J, Menyuk C. Bending-induced mode coupling in chalcogenide negative curvature fibers[J]. Optics Express, 24, 12228(2016).

[6] Sillard P, Molin D, Bigot-Astruc M et al. Low-differential-mode-group-delay 9-LP-mode fiber[J]. Journal of Lightwave Technology, 34, 425-430(2016). http://www.opticsinfobase.org/abstract.cfm?uri=OFC-2015-M2C.2

[7] Xie Yiwei, Fu Songnian, Zhang Hailiang et al. Design and optimization of mode differential group delay for few-mode fiber[J]. Acta Optica Sinica, 33, 0906010(2013).

[8] Ip E, Milione G, Huang Y Ket al. Impact of mode-dependent loss on long-haul transmission systems using few-mode fibers[C]. W4I:, W4I, 4(2016).

[9] Jespersen K, Li Z, Gruner-Nielsen L et al. Measuring distributed mode scattering in long few-moded fibers[C]. Optical Fiber Communication Conference and Exposition (OFC/NFOEC), 2012 and the National Fiber Optic Engineers Conference. IEEE, 12760699(2012).

[11] Maruyama R, Kuwaki N, Matsuo S et al. Experimental evaluation of mode conversion ratio at splice point for two-mode fibers and its simulated effect on MIMO transmission[C]. Optical Fiber Communications Conference and Exhibition. IEEE, 14560413(2014).

[12] Wang Z, Wu H, Hu X et al. Rayleigh scattering in few-mode optical fibers[J]. Scientific Reports, 6, 35844(2016). http://europepmc.org/articles/PMC5075780/

[13] Lü Yuelan, Xing Yongwei. Investigation on Rayleigh scattering waveform in phase optical time domain reflectometer[J]. Acta Optica Sinica, 31, 0819001(2011).

[14] Barnoski M K, Jensen S M. Fiber waveguides: A novel technique for investigating attenuation characteristics[J]. Applied Optics, 15, 2112-2115(1976). http://www.ncbi.nlm.nih.gov/pubmed/20165347

[15] Nakazawa M, Shibata N, Tokuda M et al. Measurements of polarization mode couplings along polarization-maintaining single-mode optical fibers[J]. Journal of the Optical Society of America A-Optics Image Science and Vision, 1, 285-292(1984). http://www.opticsinfobase.org/abstract.cfm?uri=josaa-1-3-285

[16] Li A, Hu Q, Che D et al. Measurement of distributed mode coupling in a few-mode fiber using a Brillouin optical time domain reflectometer[C]. European Conference on Optical Communication. IEEE, 14768350(2014).

[17] Yoshida M, Hirooka T. Th1J:[C]. Nakazawa M. Mode coupling measurement at a splice point between few-mode fibers using a synchronous multi-channel OTDR. Optical Fiber Communication Conference, Th1J, 4(2016).

[18] Nakazawa M, Tokuda M, Negishi Y. Measurement of polarization mode coupling along a polarization-maintaining optical fiber using a backscattering technique[J]. Optics Letters, 8, 546-548(1983). http://europepmc.org/abstract/MED/19718178