[1] [1] ZHAN Q. Cylindrical vector beams: From mathematical concepts to applications［J］. Advances in Optics and Photonics, 2009, 1(1): 1-57.

[2] [2] NIZIEV V G, NESTEROV A V. Influence of beam polarization on laser cutting efficiency［J］. Journal of Physics, 1999, D32(13): 1455-1461.

[3] [3] BOZINOVIC N, YUE Y, REN Y X, et al. Terabit-scale orbital angular momentum mode division multiplexing in fibers［J］. Science, 2013, 340(6140): 1545-1548.

[4] [4] HUANG L, GUO H, LI J, et al. Optical trapping of gold nanoparticles by cylindrical vector beam［J］. Optics Letters, 2012, 37(10): 1694-1696.

[5] [5] YAO H, SHI F, WU Z Y, et al. A mode generator and multiplexer at visible wavelength based on all-fiber mode selective coupler［J］. Na-nophotonics, 2020, 9(4): 973-981.

[6] [6] ZHANG L, ZHANG W D, LU F F, et al. Azimuthal vector beam exciting silver triangular nanoprisms for increasing the performance of surface-enhanced Raman spectroscopy［J］. Photonics Research, 2019, 7(12): 1447-1453.

[7] [7] KUGA T, TORII Y, SHIOKAWA N, et al. Novel optical trap of atoms with a doughnut beam［J］. Physical Review Letters, 1997, 78(25): 4713-4716.

[8] [8] GROSJEAN T, COURJON D, and SPAJER M. An all-fiber device for generating radially and other polarized light beams［J］. Optics Communications, 2002, 203(1/2): 1-5.

[9] [9] LIU T, CHEN S P, HOU J. Selective transverse mode operation of an all-fiber laser with a mode-selective fiber Bragg grating pair［J］. Optics Letters, 2016, 41(24): 5692-5695.

[10] [10] LI H X, YAN K, ZHANG Y M, et al. Low-threshold high-efficiency all-fiber laser generating cylindrical vector beams operated in LP11 mode throughout the entire cavity［J］. Applied Physics Express, 2018, 11(12): 122502.1-122502.3

[11] [11] PELEGRINA-BONILLA G, HAUSMANN K, SAYINC H, et al. Analysis of the modal evolution in fused-type mode-selective fiber couplers［J］. Optics Express, 2015, 23(18): 22977-22990.

[12] [12] ZHAO Y, LIU Y, ZHANG L, et al. Mode converter based on the long-period fiber gratings written in the two-mode fiber［J］. Optics Express, 2016, 24(6): 6186-6195.

[13] [13] ZHANG Y, LI H, DAI C, et al. All-fiber high-order mode laser using a metal-clad transverse mode filter［J］. Optics Express, 2018, 26(23): 29679-29686.

[14] [14] MEIER M, ROMANO V, FEURER T. Material processing with pulsed radially and azimuthally polarized laser radiation［J］. Applied Physics, 2006, A86(3): 329-334.

[15] [15] MALKA V, FRITZLER S, LEFEBVRE E, et al. Electron acceleration by a wake field forced by an intense ultrashort laser pulse［J］. Science, 2002, 298(5598): 1596-1600.

[16] [16] MARCEAU V, APRIL A, PICHE M. Electron acceleration driven by ultrashort and nonparaxial radially polarized laser pulses［J］. Optics Letters, 2012, 37(13): 2442-2444.

[17] [17] ZHOU Y, LIN J, ZHANG X, et al. Self-starting passively mode-locked all fiber laser based on carbon nanotubes with radially pola-rized emission［J］. Photonics Research, 2016, 4(6): 327-330.

[18] [18] WAN H, WANG J, ZHANG Z, et al. High efficiency mode-locked, cylindrical vector beam fiber laser based on a mode selective coupler［J］. Optics Express, 2017, 25(10): 11444-11451.

[19] [19] TAO R X, LI H X, ZHANG Y M, et al. All-fiber mode-locked laser emitting broadband-spectrum cylindrical vector mode［J］. Optics and Laser Technology, 2020, 123: 105945.

[20] [20] TALAVERANO L, ABAD S, JARABO S, et al. Multiwavelength fiber laser sources with Bragg-grating sensor multiplexing capability［J］. Journal of Lightwave Technology, 2001, 19(4): 553-558.

[21] [21] ZHU J, YANG Y, ZHANG Z, et al. Weakly-coupled MDM-WDM amplification and transmission based on compact FM-EDFA［J］. Journal of Lightwave Technology, 2020, 38(18): 5163-5169.

[22] [22] YE M, YU Y, ZOU J, et al. On-chip multiplexing conversion between wavelength division multiplexing-polarization division multiplexing and wavelength division multiplexing-mode division multiplexing［J］. Optics Letters, 2014, 39(4): 758-761.

[23] [23] ALLEGRE O J, PERRIE W, EDWARDSON S P, et al. Laser microprocessing of steel with radially and azimuthally polarized femtosecond vortex pulses［J］. Journal of Optics, 2012, 14(8): 085601.

[24] [24] HAN D D, LIU X M. Sideband-controllable mode-locking fiber laser based on chirped fiber Bragg gratings［J］. Optics Express, 2012, 20(24): 27045-27050.

[25] [25] LI J, WANG Y, LUO H, et al. Kelly sideband suppression and wavelength tuning of a conventional soliton in a Tm-doped hybrid mode-locked fiber laser with an all-fiber Lyot filter［J］. Photonics Research, 2019, 7(2): 103-109.

[26] [26] SUN B, WANG A T, XU L X, et al. Low-threshold single-wavelength all-fiber laser generating cylindrical vector beams using a few-mode fiber Bragg grating［J］. Optics Letters, 2012, 37(4): 464-466.