[1] Weerdenburg J, Velazquez-Benitez A, Uden R, et al. 10 spatial mode transmission using low differential mode delay 6-LP fiber using all-fiber photonic lanterns[J]. Optics Express, 2015, 23(19):24759-24769.
[2] Ellis A D, Zhao J, Cotter D. Approaching the non-linear shannon limit[J]. Journal of Lightwave Technology, 2010, 28(4):423-433.
[3] Chen Y, Lobato A, Jung Y, et al. 41.6 Tbit/s C-band SDM OFDM transmission through 12 spatial and polarization modes over 74.17 km few mode fiber[J]. Journal of Lightwave Technology, 2015, 33(7):1440-1444.
[4] Sleiffer VAJM, Jung Y, Veljanovski V, et al. 73.7 Tb/s (96×3×256 Gb/s) mode-division-multiplexed DP-16QAM transmission with inline MM-EDFA[J]. Optics Express, 2012, 20(26):B428-B438.
[5] Soma D, Igarashi K, Wakayama Y, et al. 2.05 peta-bit/s super-nyquist-WDM SDM transmission using 9.8 km 6 mode 19 core fiber in full C band[C]//Proceedings of European Conference on Optical Communication 2015. Valencia, Spain:IEEE, 2015:PDP5A.1-3.
[6] Berdagué S, Facq P. Mode division multiplexing in optical fibers[J]. Applied Optics, 1982, 21(11):1950-1955.
[7] Yu D, Fu S, Tang M, et al. A robust mode converter based on liquid crystal on silicon (LCOS) with off-focus operation[J]. Photonics Journal, 2015, 7(3):1-8.
[8] Wang Y, Liang L, Yu D, et al. Optoelectronic optimization of mode selective converter based on liquid crystal on silicon[J]. Optics & Laser Technology, 2016, 77:198-202.
[9] Birks T A, Gris-Sánchez I, Yerolatsitis S, et al. The photonic lantern[J]. Advances in Optics and Photonics, 2015, 7(2):107-167.
[10] Velázquez-Benítez A M, Antonio-López J E, Alvarado-Zacarías J C, et al. Scaling the Fabrication of higher order photonic lanterns using mocrostruc-tured preforms[C]//Proceedings of European Conference on Optical Communication 2015. Valencia, Spain:IEEE, 2015:Tu3.3.2.
[11] Chen H, Fontaine N K, Ryf R, et al. Design constraints of photonic-lantern spatial multiplexer based on laser-inscribed 3-D waveguide technology[J]. Journal of Lightwave Technology, 2015, 33(6):1147-1154.
[12] Ryf R, Randel S, Gnauck A H, et al. Space-division multiplexing over 10 km of three-mode fiber using coherent 6×6 MIMO processing[C]//Proceedings of Optical Fiber Communication Conference 2011. Los Angeles, USA:Optical Society of America,, 2011:PDPB10.
[13] Mori T, Sakamoto T, Wada M, et al. Low DMD four LP mode transmission fiber for wide-band WDM-MIMO system[C]//Proceedings of Optical Fiber Communication Conference 2013. Anaheim, USA:Optical Society of America, 2013:OTh3K.1.
[14] Sillard P, Molin D, Bigot-Astruc M, et al. Low-DMGD 6-LP-mode fiber[C]//Proceedings of Optical Fiber Communication Conference 2014. San Francis-co, USA:Optical Society of America, 2014:M3f.2.
[15] Jensen RV, Gruner-Nielsen L, Wong N H L, et al. Demonstration of a 9 LP-mode transmission fiber with low DMD and loss[C]//Proceedings of Optical Fiber Communication Conference 2015. Los Angeles, USA:Optical Society of America, 2015:W2A.34.
[16] Sillard P, Molin D, Bigot-Asturc M, et al. Low-differential-mode-group-delay 9-LP-mode fiber[C]//Proceedings of Optical Fiber Communication Confer-ence 2015. Los Angeles, USA:Optical Society of America, 2015:M2C.2.
[17] Yu D, Fu S, Tang M. et al. Mode dependent characteristics of Rayleigh backsdcattering in weakly-coupled few-mode fiber[J]. Optics Communications, 2015, 346:15-20.
[18] Peckham D W, Sun Y, Mc C A, et al. Few-mode fiber technology for spatial multiplexing[M]//Ivan Kaminow, Tingye Li, Alan E W. Optical Fiber Tele-communications VI A, Manhattan:Elsevier, 2013:283-319.
[19] Jung Y, Alam S, Li Z, et al. First demonstration and detailed characterization of a multimode amplifier for space division multiplexed transmission sys-tems[J]. Optics Express, 2011, 19(26):B952-B957.
[20] Salsi M, Ryf R, Cocq G L, et al. A six-mode erbium-doped fiber amplifier[C]//Proceedings of European Conference and Exhibition on Optical Communi-cation 2012. Amsterdam, Netherlands:Optical Society of America, 2012:Th.3.A.6.
[21] Lim E L, Jung Y, Kang Q, et al. First demonstration of cladding pumped few-moded EDFA for mode division multiplexed transmission[C]//Proceedings of Optical Fiber Communication Conference 2014, San Francisco, USA:Optical Society of America, 2014:M2J. 2.
[22] Jain S, Jung Y, May-Smith T C, et al. Few-mode multi-element fiber amplifier for mode division multiplexing[J]. Optics Express, 2014, 22(23):29031-29036.
[23] Ono H, Hosokawa T, Ichii K, et al. 2-LP mode few-mode fiber amplifier employing ring-core erbium-doped fiber[J]. Optics Express, 2015, 23(21):27405-27418.
[24] Ryf R, Fontaine N K, Chen H, et al. 72 Tb/s transmission over 179 km all-fiber 6-mode span with two cladding pumped in-line amplifiers[C]//Proceed-ings of European Conference and Exhibition on Optical Communication 2015. Valencia, Spain:IEEE, 2015:Tu.3.2.2.
[25] Ryf R, Sierra A, Essiambre R J, et al. Mode-equalized distributed Raman amplification in 137 km few-mode fiber[C]//Proceedings of European Confer-ence and Exposition on Optical Communications 2011. Geneva, Switzerland:Optical Society of America, 2011:Th.13.K.5.
[26] Ryf R, Randel S, Mestre M A, et al. 209 km single-span mode-and wavelength-multiplexed transmission over hybrid few-mode fiber[C]//Proceedings of European Conference and Exhibition on Optical Communication 2012. Amsterdam, Netherlands:Optical Society of America, 2012:Tu.1.C.1.
[27] Ryf R, Esmaeelpour M, Fontaine N K, et al. Distributed raman amplification based transmission over 1050 km few-mode fiber[C]//Proceedings of Euro-pean Conference and Exhibition on Optical Communication 2015. Valencia, Spain:IEEE, 2015:Tu.3.2.3.
[28] Zhao N, Huang B, Amezcua-Correa R, et al. Few-mode fiber optical parametric amplifier[C]//Proceedings of Optical Fiber Communication Conference 2013. Anaheim, USA:Optical Society of America, 2013:OTu2D.5.
[29] Ryf R, Fontaine N K, Mestre M A, et al. 12×12 MIMO transmission over 130 km few-mode fiber[C]//Proceedings of Frontiers in Optics 2012. Roches-ter, USA:Optical Society of America (OSA), 2012:FW6C.4.
[30] Fontaine N K, Ryf R, Chen H, et al. 30×30 MIMO transmission over 15 spatial modes[C]//Proceedings of Optical Fiber Communication Conference 2015. Los Angeles, USA:Optical Society of America, 2015:Th5C.1.
[31] Randel S, Ryf R, Gnauck A H, et al. Mode-Multiplexed 6×20 GBd QPSK transmission over 1200 km DGD-compensated few-mode fiber[C]//Proceed-ings of Optical Fiber Communication Conference 2012. Los Angeles, USA:Optical Society of America, 2012:PDP5C.5.
[32] Chen H, Sleiffer V, Uden R, et al. 3 MDM×8 WDM×320 Gb/s DP-32QAM transmission over a 120 km few-mode fiber span employing 3-spot mode couplers[C]//Proceedings of Opto Electronics and Communications Conference and Photonics in Switching 2013. Kyoto, Japan:Optical Society of Ameri-ca (OSA), 2013:PD3_6.
[33] Ryf R, Randel S, Fontaine N K, et al. 32 bit/s/Hz spectral efficiency WDM transmission over 177 km few-mode fiber[C]//Proceedings of National Fiber Optic Engineers Conference 2013. Anaheim, USA:Optical Society of America, 2013:PDP5A. 1.
[34] Uden R G H, Okonkwo C M, Sleiffer V A J M. et al. MIMO equalization with adaptive step size for few-mode fiber transmission systems[J]. Optics Ex-press, 2014, 22(1):119-126.