[1] D. J. Richardson, J. M. Fini, L. E. Nelson. Space-division multiplexing in optical fibres. Nat. Photonics, 7, 354-362(2013).
[2] R. Ryf, S. Randel, A. H. Gnauck, C. Bolle, A. Sierra, S. Mumtaz, M. Esmaeelpour, E. C. Burrows, R. J. Essiambre, P. J. Winzer, D. W. Peckham, A. H. McCurdy, R. Lingle. Mode-division multiplexing over 96 km of few-mode fiber using coherent 6 × 6 MIMO processing. J. Lightwave Technol., 30, 521-531(2012).
[3] C. Koebele, M. Salsi, L. Milord, R. Ryf, C. Bolle, P. Sillard, S. Bigo, G. Charlet. 40 km transmission of five mode division multiplexed data streams at 100 Gb/s with low MIMO-DSP complexity. 37th European Conference and Exhibition on Optical Communication, Th.13.C.3(2011).
[4] R. Stolen. Phase-matched-stimulated four-photon mixing in silica-fiber waveguides. IEEE J. Quantum Electron., 11, 100-103(1975).
[5] N. Zhao, B. Huang, R. Amezcua-Correa, X. Li, G. Li. Few-mode fiber optical parametric amplifier. Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OTu2D.5(2013).
[6] M. Guasoni. Generalized modulational instability in multimode fibers: wideband multimode parametric amplification. Phys. Rev. A, 92, 033849(2015).
[7] E. Nazemosadat, A. Lorences-Riesgo, M. Karlsson, P. A. Andrekson. Design of highly nonlinear few-mode fiber for C-band optical parametric amplification. J. Lightwave Technol., 35, 2810-2817(2017).
[8] Y. Xiao, R.-J. Essiambre, M. Desgroseilliers, A. M. Tulino, R. Ryf, S. Mumtaz, G. P. Agrawal. Theory of intermodal four-wave mixing with random linear mode coupling in few-mode fibers. Opt. Express, 22, 32039-32059(2014).
[9] R. J. Essiambre, M. A. Mestre, R. Ryf, A. H. Gnauck, R. W. Tkach, A. R. Chraplyvy, Y. Sun, X. Jiang, R. Lingle. Experimental investigation of inter-modal four-wave mixing in few-mode fibers. IEEE Photon. Technol. Lett., 25, 539-542(2013).
[10] S. M. M. Friis, I. Begleris, Y. Jung, K. Rottwitt, P. Petropoulos, D. J. Richardson, P. Horak, F. Parmigiani. Inter-modal four-wave mixing study in a two-mode fiber. Opt. Express, 24, 30338-30349(2016).
[11] O. F. Anjum, P. Horak, Y. Jung, M. Suzuki, Y. Yamamoto, T. Hasegawa, P. Petropoulos, D. J. Richardson, F. Parmigiani. Bandwidth enhancement of inter-modal four wave mixing Bragg scattering by means of dispersion engineering. APL Photon., 4, 022902(2019).
[12] J. Demas, L. Rishøj, X. Liu, G. Prabhakar, S. Ramachandran. Intermodal group-velocity engineering for broadband nonlinear optics. Photon. Res., 7, 1-7(2019).
[13] H. Zhang, M. Bigot-Astruc, L. Bigot, P. Sillard, J. Fatome. Multiple modal and wavelength conversion process of a 10-Gbit/s signal in a 6-LP-mode fiber. Opt. Express, 27, 15413-15425(2019).
[14] G. Rademacher, R. Ryf, N. K. Fontaine, H. Chen, R. M. Jopson, R. Essiambre, B. J. Puttnam, R. S. Luís, Y. Awaji, N. Wada, S. Gross, N. Riesen, M. Withford, Y. Sun, R. Lingle. Experimental investigation of parametric mode and wavelength conversion in a 4.7 km few-mode fiber. European Conference on Optical Communication (ECOC), 1(2018).
[15] E. Nazemosadat, A. Mafi. Design considerations for multicore optical fibers in nonlinear switching and mode-locking applications. J. Opt. Soc. Am. B, 31, 1874-1878(2014).
[16] G. Lopez-Galmiche, Z. S. Eznaveh, M. A. Eftekhar, J. A. Lopez, L. G. Wright, F. Wise, D. Christodoulides, R. A. Correa. Visible supercontinuum generation in a graded index multimode fiber pumped at 1064 nm. Opt. Lett., 41, 2553-2556(2016).
[17] L. G. Wright, D. N. Christodoulides, F. W. Wise. Controllable spatiotemporal nonlinear effects in multimode fibres. Nat. Photonics, 9, 306-310(2015).
[18] H. Pourbeyram, E. Nazemosadat, A. Mafi. Detailed investigation of intermodal four-wave mixing in SMF-28: blue-red generation from green. Opt. Express, 23, 14487-14500(2015).
[19] J. Cheng, M. E. V. Pedersen, K. Charan, K. Wang, C. Xu, L. Grüner-Nielsen, D. Jakobsen. Intermodal four-wave mixing in a higher-order-mode fiber. Appl. Phys. Lett., 101, 161106(2012).
[20] E. Nazemosadat, H. Pourbeyram, A. Mafi. Phase matching for spontaneous frequency conversion via four-wave mixing in graded-index multimode optical fibers. J. Opt. Soc. Am. B, 33, 144-150(2016).
[21] R. Dupiol, A. Bendahmane, K. Krupa, J. Fatome, A. Tonello, M. Fabert, V. Couderc, S. Wabnitz, G. Millot. Intermodal modulational instability in graded-index multimode optical fibers. Opt. Lett., 42, 3419-3422(2017).
[22] A. Bendahmane, K. Krupa, A. Tonello, D. Modotto, T. Sylvestre, V. Couderc, S. Wabnitz, G. Millot. Seeded intermodal four-wave mixing in a highly multimode fiber. J. Opt. Soc. Am. B, 35, 295-301(2018).
[23] K. Inoue. Four-wave mixing in an optical fiber in the zero-dispersion wavelength region. J. Lightwave Technol., 10, 1553-1561(1992).
[24] G. P. Agrawal. Nonlinear Fiber Optics(2007).
[25] R. H. Stolen, J. E. Bjorkholm, A. Ashkin. Phase-matched three-wave mixing in silica fiber optical waveguides. Appl. Phys. Lett., 24, 308-310(1974).
[26] C. J. McKinstrie, S. Radic, M. G. Raymer. Quantum noise properties of parametric amplifiers driven by two pump waves. Opt. Express, 12, 5037-5066(2004).
[27] G. Rademacher, R. S. Luís, B. J. Puttnam, Y. Awaji, M. Suzuki, T. Hasegawa, N. Wada. Wide-band intermodal wavelength conversion in a dispersion engineered highly nonlinear FMF. Optical Fiber Communication Conference (OFC), W1C.4(2019).
[28] K. Nakajima, M. Ohashi. Dopant dependence of effective nonlinear refractive index in GeO2- and F-doped core single-mode fibers. IEEE Photon. Technol. Lett., 14, 492-494(2002).
[29] K. Uesaka, K. K. Y. Wong, M. E. Marhic, L. G. Kazovsky. Wavelength exchange in a highly nonlinear dispersion-shifted fiber: theory and experiments. IEEE J. Sel. Top. Quantum Electron., 8, 560-568(2002).
[30] J. Carpenter, B. C. Thomsen, T. D. Wilkinson. Degenerate mode-group division multiplexing. J. Lightwave Technol., 30, 3946-3952(2012).
[31] J. Carpenter, B. J. Eggleton, J. Schröder. 110×110 optical mode transfer matrix inversion. Opt. Express, 22, 96-101(2014).
[32] Q. Zhan. Cylindrical vector beams: from mathematical concepts to applications. Adv. Opt. Photon., 1, 1-57(2009).
[33] Y. Yang, J. Cui, S. Fu, M. Tang, D. Liu. All-fiber flexible generation of the generalized cylindrical vector beam (CVB) over the C-band. IEEE J. Sel. Top. Quantum Electron., 26, 4500307(2020).
[34] J. Cheng, M. E. V. Pedersen, K. Wang, C. Xu, L. Grüner-Nielsen, D. Jakobsen. Time-domain multimode dispersion measurement in a higher-order-mode fiber. Opt. Lett., 37, 347-349(2012).
[35] J. Su, X. Dong, C. Lu. Characteristics of few mode fiber under bending. IEEE J. Sel. Top. Quantum Electron., 22, 139-145(2016).
[36] A. Boskovic, S. V. Chernikov, J. R. Taylor, L. Gruner-Nielsen, O. A. Levring. Direct continuous-wave measurement of n2 in various types of telecommunication fiber at 1.55 μm. Opt. Lett., 21, 1966-1968(1996).
[37] K. Krupa, A. Tonello, V. V. Kozlov, V. Couderc, P. D. Bin, S. Wabnitz, A. Barthélémy, L. Labonté, S. Tanzilli. Bragg-scattering conversion at telecom wavelengths towards the photon counting regime. Opt. Express, 20, 27220-27225(2012).
[38] M. Guasoni, F. Parmigiani, P. Horak, J. Fatome, D. J. Richardson. Intermodal four-wave mixing and parametric amplification in kilometer-long multimode fibers. J. Lightwave Technol., 35, 5296-5305(2017).
[39] M. Esmaeelpour, R. Essiambre, N. K. Fontaine, R. Ryf, J. Toulouse, Y. Sun, R. Lingle. Power fluctuations of intermodal four-wave mixing in few-mode fibers. J. Lightwave Technol., 35, 2429-2435(2017).