[1] Shi P, Du L P, Yuan X C. Structured spin angular momentum in highly focused cylindrical vector vortex beams for optical manipulation[J]. Optics Express, 26, 23449-23459(2018).

[2] Padgett M, Bowman R. Tweezers with a twist[J]. Nature Photonics, 5, 343-348(2011).

[3] Simpson N B, Allen L, Padgett M J. Optical tweezers and optical spanners with Laguerre-Gaussian modes[J]. Journal of Modern Optics, 43, 2485-2491(1996). http://www.tandfonline.com/doi/abs/10.1080/09500349608230675

[4] Ding D S, Zhang W, Zhou Z Y et al. Quantum storage of orbital angular momentum entanglement in an atomic ensemble[J]. Physical Review Letters, 114, 050502(2015). http://www.ncbi.nlm.nih.gov/pubmed/25699427

[5] Yu S F, Pang F F, Liu H H et al. Compositing orbital angular momentum beams in Bi4Ge3O12 crystal for magnetic field sensing[J]. Applied Physics Letters, 111, 091107(2017). http://adsabs.harvard.edu/abs/2017ApPhL.111i1107Y

[6] Milione G, Wang T, Han J et al. Remotely sensing an object's rotational orientation using the orbital angular momentum of light [Invited][J]. Chinese Optics Letters, 15, 030012(2017). http://www.opticsjournal.net/Articles/Abstract?aid=OJ170307000016kQmTpW

[7] Bouchal Z, Celechovsky R. Mixed vortex states of light as information carriers[J]. New Journal of Physics, 6, 131(2004). http://adsabs.harvard.edu/abs/2004njph....6..131b

[8] Bozinovic N, Yue Y, Ren Y X et al. Terabit-scale orbital angular momentum mode division multiplexing in fibers[J]. Science, 340, 1545-1548(2013). http://www.jstor.org/stable/41988640

[9] Huang H, Xie G D, Yan Y et al. 100 Tbit/s free-space data link enabled by three-dimensional multiplexing of orbital angular momentum, polarization, and wavelength[J]. Optics Letters, 39, 197-200(2014). http://www.ncbi.nlm.nih.gov/pubmed/24562105

[10] Allen L, Beijersbergen M W. Spreeuw R J C, et al. Orbital angular momentum of light and the transformation of Laguerre-Gaussian laser modes[J]. Physical Review A, 45, 8185-8189(1992).

[11] Zhu G X, Hu Z Y, Wu X et al. Scalable mode division multiplexed transmission over a 10-km ring-core fiber using high-order orbital angular momentum modes[J]. Optics Express, 26, 594-604(2018). http://www.ncbi.nlm.nih.gov/pubmed/29401942

[12] Gregg P, Kristensen P, Ramachandran S. Conservation of orbital angular momentum in air-core optical fibers[J]. Optica, 2, 267-270(2015). http://www.opticsinfobase.org/optica/abstract.cfm?uri=optica-2-3-267

[13] Liu J F, Xing D K, Zeng X Y et al. Orbital angular momentum multiplexing technology based on optical fiber[J]. Laser & Optoelectronics Progress, 55, 050005(2018).

[14] Gregg P, Mirhosseini M, Rubano A et al. Q-plates as higher order polarization controllers for orbital angular momentum modes of fiber[J]. Optics Letters, 40, 1729-1732(2015). http://www.ncbi.nlm.nih.gov/pubmed/25872059

[15] Schemmel P, Pisano G, Maffei B. Modular spiral phase plate design for orbital angular momentum generation at millimetre wavelengths[J]. Optics Express, 22, 14712-14726(2014). http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-22-12-14712

[16] Beijersbergen M W. Allen L, van der Veen H E L O, et al. Astigmatic laser mode converters and transfer of orbital angular momentum[J]. Optics Communications, 96, 123-132(1993).

[17] Wang J, Liu J, Li S H et al. Experimental demonstration of free-space optical communications using OFDM-QPSK/16QAM-carrying fractional orbital angular momentum (OAM) multiplexing. [C]∥Optical Fiber Communication Conference, March 22-26, 2015, Los Angeles, California, Unitied States. Washington, DC: OSA, M2F, 5(2015).

[18] Rodenburg B. Lavery M P J, Malik M, et al. Influence of atmospheric turbulence on states of light carrying orbital angular momentum[J]. Optics Letters, 37, 3735-3737(2012).

[19] Gao J Q, Sun J F, Li J W et al. Coupling method for making space light into single-mode fiber based on laser nutation[J]. Chinese Journal of Lasers, 43, 0801001(2016).

[20] Li L, Zhang B, Xia Y W et al. Pulse temporal profile measurement technology of frequency modulation based on self-focusing lens coupling optical fiber sampling for high power laser facility[J]. Chinese Journal of Lasers, 44, 0504002(2017).

[21] Bozinovic N, Golowich S, Kristensen P et al. Control of orbital angular momentum of light with optical fibers[J]. Optics Letters, 37, 2451-2453(2012). http://europepmc.org/abstract/MED/22743418

[22] Zhao Y H, Liu Y Q, Zhang C Y et al. All-fiber mode converter based on long-period fiber gratings written in few-mode fiber[J]. Optics Letters, 42, 4708-4711(2017). http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-42-22-4708

[23] Wen J X, He X Y, Xing J F et al. All-fiber OAM amplifier with high purity and broadband spectrum gain based on fused taper vortex-beam coupler[J]. IEEE Photonics Journal, 10, 7105308(2018). http://ieeexplore.ieee.org/document/8496779

[24] Jin X Q, Pang F F, Zhang Y et al. Generation of the first-order OAM modes in single-ring fibers by offset splicing technology[J]. IEEE Photonics Technology Letters, 28, 1581-1584(2016). http://ieeexplore.ieee.org/document/7450143/

[25] Xia F, Zhao Y, Hu H F et al. Broadband generation of the first-order OAM modes in two-mode fiber by offset splicing and fiber rotating technology[J]. Optics & Laser Technology, 112, 436-441(2019).

[26] Viswanathan N K. Krishna Inavalli V V G. Generation of optical vector beams using a two-mode fiber[J]. Optics Letters, 34, 1189-1191(2009).

[27] Ke X Z, Ge T. Experiment on generation of vortex light with few-mode fiber[J]. Chinese Journal of Lasers, 44, 1106004(2017).

[28] Ramachandran S, Kristensen P, Yan M F. Generation and propagation of radially polarized beams in optical fibers[J]. Optics Letters, 34, 2525-2527(2009). http://www.opticsinfobase.org/abstract.cfm?URI=ol-34-16-2525

[29] Ramachandran S, Gregg P, Kristensen P et al. On the scalability of ring fiber designs for OAM multiplexing[J]. Optics Express, 23, 3721-3730(2015). http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-23-3-3721

[30] Alder T, Stohr A, Heinzelmann R et al. High-efficiency fiber-to-chip coupling using low-loss tapered single-mode fiber[J]. IEEE Photonics Technology Letters, 12, 1016-1018(2000). http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=867993

[31] Thual M, Rochard P, Chanclou P et al. Contribution to research on micro-lensed fibers for modes coupling[J]. Fiber and Integrated Optics, 27, 532-541(2008). http://www.tandfonline.com/doi/abs/10.1080/01468030802272450

[32] Song W, Yang J F, Liu H H et al. Generation of OAM modes by using tapered lensed single mode fiber. [C]∥2018 Asia Communications and Photonics Conference (ACP), October 26-29, 2018, Hangzhou, China. New York: IEEE, 18355846(2018).

[33] Boudreau R A. -06-25[2019-02-15]. https:∥patents.google.com/patent/US5026138A/en.(1991).