[1] Jedrzejewski K. Biconical fused taper: a universal fiber devices technology[J]. Opto-electronics Review, 8, 153-159(2000). http://yadda.icm.edu.pl/yadda/element/bwmeta1.element.baztech-article-BWA1-0001-0774

[2] Shuai C J, Duan J, Wang J et al. Viscoelastic modeling and analysis of optical fibre coupler in process of fused biconical taper[J]. Journal of Central South University (Science and Technology), 37, 79-83(2006).

[3] Huang J B, Liu X S, Zhang Y et al. Optical trapping and orientation of Escherichia coli cells using two tapered fiber probes[J]. Photonics Research, 3, 308(2015). http://www.opticsjournal.net/Articles/Abstract?aid=OJ1601060001668EaHdJ

[4] Li Y C, Liu X S, Li B J. Single-cell biomagnifier for optical nanoscopes and nanotweezers[J]. Light: Science & Applications, 8, 61(2019).

[5] Kawasaki B S, Hill K O, Lamont R G. Biconical-taper single-mode fiber coupler[J]. Optics Letters, 6, 327-328(1981).

[6] Li A, Ye J, Chen X et al. Fabrication of a low-loss fused fiber spatial-mode coupler for few-mode transmission[J]. IEEE Photonics Technology Letters, 25, 1985-1988(2013).

[7] Yu Y, Bian Q, Zhang X L et al. All-optical intensity modulation characteristics of optical microfiber coupler based on light induced thermal effect[J]. Chinese Journal of Lasers, 45, 0606003(2018).

[8] Zhou X F, Chen Z L, Wang Z F et al. High power incoherent beam combining of fiber lasers based on a 7×1 all-fiber signal combiner[J]. Optical Engineering, 55, 056103(2016).

[9] Choi I S, Park J, Jeong H et al. Fabrication of 4×1 signal combiner for high-power lasers using hydrofluoric acid[J]. Optics Express, 26, 30667-30677(2018).

[10] Fu X H, Xie H Y, Yang C Q et al. High-sensitivity refractive index sensors based on fused tapered photonic crystal fiber[J]. Optoelectronics Letters, 12, 166-168(2016). http://www.opticsjournal.net/Articles/Abstract?aid=OJ171012000561EbHeKg

[11] Guo Z, Chu F H, Fan J Y et al. Study of macro-bending biconical tapered plastic optical fiberfor relative humidity sensing[J]. Sensor Review, 39, 352-357(2019).

[12] Wu Y J, Ye H Q, Han J et al. Analysis and improvement of photonic crystal fiber tapers for spectral broadening degradation[J]. Acta Optica Sinica, 39, 1106006(2019).

[13] Zhang L, He Z W, Song J et al. Influence of annealing process on the properties of optical fiber[J]. Optics & Optoelectronic Technology, 14, 47-50(2016).

[14] Xiang X, Zheng W G, Yuan X D et al. Effects of annealing parameters on transmission wavefront and damage threshold of fused silica[J]. High Power Laser and Particle Beams, 23, 2396-2400(2011).

[15] Mohanna Y, Saugrain J M, Rousseau J C et al. Relaxation of internal stresses in optical fibers[J]. Journal of Lightwave Technology, 8, 1799-1802(1990).

[16] Zhang C C, Liao W, Zhang L J et al. Investigation of control of residual stress induced by CO2 laser-based damage mitigation of fused silica optics[J]. Advances in Condensed Matter Physics, 2014, 1-5(2014).