[1] Wang Chao, Zhang Xuezhi, Jiang Junfeng, Liu Kun, Wang Shuang, Wang Rundong, Li Yuanyao and Liu Tiegen, Optics Express 27, 18157 (2019).

[2] Chengliang Wang, Guofeng Yan, Zhenggang Lian, Xiang Chen, Shengnan Wu and Sailing He, Sensors & Actuators: B: Chemical 255, 1937 (2018).

[3] Peng Zhou, Changrui Liao, Zhengyong Li, Shen Liu and Yiping Wang, Journal of Lightwave Technology 37, 3214 (2019).

[4] Yongfeng Wu, Yundong Zhang, Jing Wu and Ping Yuan, Journal of Lightwave Technology 35, 4311 (2017).

[5] Junfeng Jiang, Zixu Zhao, Shuang Wang, Kun Liu, Yi Huang, Chenxi Shan, Hai Xiao and Tiegen Liu, Optics Express 26, 21606 (2018).

[6] Pevec Simon and Donlagic Denis, Optics Express 26, 2368 (2018).

[7] Tao Wei, Yukun Han, Hai-Lung Tsai and Hai Xiao, Optics Letters 33, 536 (2008).

[8] Ling-Xin Kong, Yan-Xin Zhang, Wei-Gang Zhang, Yun-Shan Zhang, Lin Yu, Song Wang, Peng-Cheng Geng and Tie-Yi Yan, Sensors & Actuators A: Physical 281, 236 (2018).

[9] Yong Zhao, Mao-qing Chen, Feng Xia and Ri-qing Lv, Sensors & Actuators A: Physical 270, 162 (2018).

[10] Mao-qing Chen, Yong Zhao, Feng Xia, Yun Peng and Rui-jie Tong, Sensors & Actuators A: Physical 275, 60 (2018).

[11] Xiaoguang Qi, Shuang Wang, Junfeng Jiang, Kun Liu, Xue Wang, Yiguang Yang and Tiegen Liu, Journal of Lightwave Technology 37, 2719 (2019).

[12] Simon Pevec, Denis Donlagic, Optics Express 22, 16241 (2014).

[13] Uddin Nezam, Liu Guigen, Sheng Qiwen and Han Ming, Optics Letters 44, 2578 (2019).

[14] Liu Guigen, Sheng Qiwen, Dam Dustin, Hua Jiong, Hou Weilin and Han Ming, Optics Letters 42, 1412 (2017).

[15] Yan Zhang, Xiaopei Chen, Yongxin Wang, Kristie L. Cooper and Anbo Wang, Journal of Lightwave Technology 25, 1797 (2007).

[16] Yong Zhao, Mao-qing Chen, Ri-qing Lv and Feng Xia, Optics Communications 384, 107 (2017).

[17] Jiajun Tian, Yujie Lu, Qi Zhang and Ming Han, Optics Express 21, 6633 (2013).

[18] Joel Villatoro, Vittoria Finazzi, Gianluca Coviello and Valerio Pruneri, Optics Letters 34, 2441 (2009).