[1] Phillips K C, Gandhi H H, Mazur E, Sundaram S K[J]. Adv. Opt. Photon., 7, 684(2015).
[2] Shi W, Fang Q, Zhu X, Norwood R A, Peyghambarian N[J]. Appl. Opt., 53, 6554(2014).
[3] Ma J D, Wu H Y, Lu Q, Ma T, Shi L, Sun Q, Mao Q H[J]. Acta Phys. Sin., 67, 094207(2018).
[6] Zheng Y, Tian J R, Dong Z K, Xu R Q, Li K X, Song Y R[J]. Chinese Phys. B, 26, 074212(2017).
[8] Morin F, Druon F, Hanna M, Georges P[J]. Opt. Lett., 34, 1991(2009).
[9] Huang Q, Zou C, Wang T, Araimi M A, Rozhin A, Mou C[J]. Chinese Phys. B, 27, 094210(2018).
[11] Wang Z, Zhan L, Fang X, Gao C, Qian K[J]. J. Lightwave Technol., 34, 4128(2016).
[12] Dong X, Shum P, Ngo N Q, Chan C C, Guan B O, Tam H Y[J]. Opt. Express, 11, 3622(2003).
[13] Dong X, Shum P, Ngo N Q, Tam H Y, Dong X[J]. J. Lightwave Technol., 23, 1334(2005).
[16] Meng Y, Niang A, Guesmi K, Salhi M, Sanchez F[J]. Opt. Express, 22, 29921(2014).
[18] Yan D, Li X, Zhang S, Han M, Han H, Yang Z[J]. Opt. Express, 24, 739(2016).
[20] Li D, Shen D, Li L, Tang D, Su L, Zhao L[J]. Opt. Lett., 43, 1222(2018).
[21] Zheng Z, Ouyang D, Ren X, Wang J, Pei J, Ruan S[J]. Photon. Res., 7, 513(2019).
[22] Du T, Li W, Ruan Q, Wang K, Chen N, Luo Z[J]. Appl. Phys. Express, 11, 052701(2018).
[24] Jeong Y, Vazquezzuniga L A, Lee S, Kwon Y[J]. Opt. Fiber Technol., 20, 575(2014).
[25] Zhao K, Wang P, Ding Y, Yao S, Gui L, Xiao X, Yang C[J]. Appl. Phys. Express, 12, 012002(2019).
[26] Chen J W, Zhao L M[J]. Laser & Optoelectronics Progress, 54, 110002(2017).
[27] Jin X X, Li L, Luo J L, Ge Y Q, Zhang Q, Zhao L M[J]. Laser & Optoelectronics Progress, 52, 121902(2015).