[1] Wu Y X, Wang Z Y, Chen S B, et al. Cascade conical refraction for annular pumping of a vortex Nd∶YAG laser and selective excitation of low- and high-order Laguerre-Gaussian modes[J]. Laser Physics Letters, 2018, 15(5): 055804.

[2] 李新忠, 孟莹, 李贺贺, 等. 完美涡旋光束的产生及其空间自由调控技术[J]. 光学学报, 2016, 36(10): 1026018.

    Li X Z, Meng Y, Li H H, et al. Generation of perfect vortex beams and space free-control technology[J]. Acta Optica Sinica, 2016, 36(10): 1026018.

[3] Mohammed W S, Pitchumani M, Mehta A A, et al. Selective excitation of the LP11 mode in step index fiber using a phase mask[J]. Optical Engineering, 2006, 45(7): 074602.

[4] Li S H, Mo Q, Hu X, et al. Controllable all-fiber orbital angular momentum mode converter[J]. Optics Letters, 2015, 40(18): 4376-4379.

[5] Gibson G, Courtial J, Padgett M J, et al. Free-space information transfer using light beams carrying orbital angular momentum[J]. Optics Express, 2004, 12(22): 5448-5456.

[6] 吕宏, 柯熙政. 具轨道角动量光束用于光通信编码及解码研究[J]. 光学学报, 2009, 29(2): 331-335.

    Lü H, Ke X Z. Research on the beam with orbital angular momentum used in encoding and decoding of optical communication[J]. Acta Optica Sinica, 2009, 29(2): 331-335.

[7] 柯熙政, 郭新龙. 用光束轨道角动量实现相位信息编码[J]. 量子电子学报, 2015, 32(1): 69-76.

    Ke X Z, Guo X L. Realization of optical phase information encode by using orbital angular momentum of light beam[J]. Chinese Journal of Quantum Electronics, 2015, 32(1): 69-76.

[8] 柯熙政, 胥俊宇. 涡旋光束轨道角动量干涉及检测的研究[J]. 中国激光, 2016, 43(9): 0905003.

    Ke X Z, Xu J N. Interference and detection of vortex beams with orbital angular momentum[J]. Chinese Journal of Lasers, 2016, 43(9): 0905003.

[9] BozinovicN, KristensenP, RamachandranS. Are orbital angular momentum (OAM/Vortex) states of light long-lived in fibers?[C]∥Laser Science, October 16-20, 2011, San Jose, California United States. Washington: Optical Society of America, 2011: LWL3.

[10] Bozinovic N, Yue Y, Ren Y, et al. Terabit-scale orbital angular momentum mode division multiplexing in fibers[J]. Science, 2013, 340(6140): 1545-1548.

[11] Yan Y, Wang J, Zhang L, et al. Fiber coupler for generating orbital angular momentum mode[J]. Optics Letters, 2011, 36(21): 4269-4271.

[12] Yan Y, Zhang L, Wang J, et al. Fiber structure to convert a Gaussian beam to higher-order optical orbital angular momentum modes[J]. Optics Letters, 2012, 37(16): 3294-3296.

[13] Yan Y, Yue Y, Huang H, et al. Efficient generation and multiplexing of optical orbital angular momentum modes in a ring fiber by using multiple coherent inputs[J]. Optics Letters, 2012, 37(17): 3645-3647.

[14] Li S H, Wang J. Multi-orbital-angular-momentum multi-ring fiber for high-density space-division multiplexing[J]. IEEE Photonics Journal, 2013, 5(5): 7101007.

[15] Brunet C, Vaity P, Messaddeq Y, et al. Design, fabrication and validation of an OAM fiber supporting 36 states[J]. Optics Express, 2014, 22(21): 26117-26127.

[16] Li S, Wang J. A compact trench-assisted multi-orbital-angular-momentum multi-ring fiber for ultrahigh-density space-division multiplexing (19 rings×22 modes)[J]. Scientific Reports, 2014, 4: 3853.

[17] 黄桂勇, 周守利, 覃亚丽, 等. 改进环光纤结构中轨道角动量模式特性分析[J]. 激光与光电子学进展, 2015, 52(8): 080604.

    Huang G Y, Zhou S L, Qin Y L, et al. Modal characteristics analysis of orbital angular momentum in a modified ring fiber[J]. Laser & Optoelectronics Progress, 2015, 52(8): 080604.

[18] Zhang X, Wang A, Chen R, et al. Generation and conversion of higher order optical vortices in optical fiber with helical fiber Bragg gratings[J]. Journal of Lightwave Technology, 2016, 34(10): 2413-2418.

[19] 柯熙政, 葛甜. 利用少模光纤产生涡旋光的实验[J]. 中国激光, 2017, 44(11): 1106004.

    Ke X Z, Ge T. Experiment on generation of vortex light with few-mode fiber[J]. Chinese Journal of Lasers, 2017, 44(11): 1106004.

[20] 张羚翔, 魏薇, 张志明, 等. 环形光子晶体光纤中涡旋光的传输得行研究[J]. 物理学报, 2017, 66(1): 014205.

    Zhang L X, Wei W, Zhang Z M, et al. Propagation properties of vortex beams in a ring photonic crystal fiber[J]. Acta Physica Sinica, 2017, 66(1): 014205.

[21] Ung B, Vaity P, Wang L, et al. Few-mode fiber with inverse-parabolic graded-index profile for transmission of OAM-carrying modes[J]. Optics Express, 2014, 22(15): 18044-18055.

[22] Wang L, Vaity P, Ung B, et al. Characterization of OAM fibers using fiber Bragg gratings[J]. Optics Express, 2014, 22(13): 15653-15661.

[23] Duocastella M, Arnold C B. Bessel and annular beams for materials processing[J]. Laser and Photonics Reviews, 2012, 6(5): 607-621.

[24] Yue Y, Yan Y, Ahmed N, et al. Mode properties and propagation effects of optical orbital angular momentum (OAM) modes in a ring fiber[J]. IEEE Photonics Journal, 2012, 4(2): 535-543.

[25] 孙培敬. 光纤中矢量涡旋光束的产生[D]. 哈尔滨: 哈尔滨理工大学, 2016: 18- 22.

    Sun PJ. Generation of vector vortex beams in optical fibers[D]. Harbin: Harbin University of Science and Technology, 2016: 18- 22.

[26] 张霞, 宿晓飞, 张磊, 等. 折射率环状分布光纤中基于高阶贝塞尔函数的轨道角动量模式分析[J]. 中国激光, 2014, 41(12): 1205002.

    Zhang X, Su X F, Zhang L, et al. Analysis of orbital angular momentum modes based on high-order bessel functions in optical fiber of ring refractive index distribution[J]. Chinese Journal of Lasers, 2014, 41(12): 1205002.