[1] XIAO Chengwei. G.657 single-mode fiber design based on OptiFiber[J]. Computer and Telecommunications, 36-40(2020).

[2] QIN Yu, SHEN Yichun, QIAN Yigang. Study on manufacturing G.657.A2 optical fiber using VAD process[J]. Optical Communication Technology, 43, 16-21(2019).

[3] JAFFER S S, HUSSAIN A, QURESHI M A et al. A low cost PON-FSO based fronthaul solution for 5G CRAN architecture[J]. Optical Fiber Technology, 63, 102500(2021).

[4] LIANG Siyuan, ZHAO Fangli, ZHAO Feng et al. ANN-based channel estimation algorithm of IM/DD-OFDM/OQAM-PON systems with mobile fronthaul network in 5G[J]. Optical Fiber Technology, 59, 102310(2020).

[5] MOHAMMED A F Y, NEWAZ S H S, SANKAR D S et al. A green converged TWDM-PON and 5G HetNet catering applications demanding low latency[J]. Optical Fiber Technology, 58, 102261(2020).

[6] RUGGERI E, TSAKYRIDIS A, VAGIONAS C et al. A 5G fiber wireless 4Gb/s WDM fronthaul for flexible 360 degrees coverage in V-band massive MIMO small cells[J]. Journal of Lightwave Technology, 39, 1081-1088(2021).

[7] JunshanWEY, ZHANG Junwen. Passive optical networks for 5G transport: technology and standards[J]. Journal of Lightwave Technology, 37, 2830-2837(2019).

[8] LI Chungyi, LU Haihan, CHOU Cingru et al. A flexible bidirectional fiber-FSO-5G wireless convergent system[J]. Journal of Lightwave Technology, 39, 1296-1305(2021).

[9] LIMA E S, PEREIRA L A M, BORGES R M et al. 5G new radio photonically-amplified Xhaul[J]. Optical Fiber Technology, 60, 102358(2020).

[10] SHE Yulai, ZHOU Dejian, CHEN Xiaoyong et al. Study on ultralow bending loss of bend-insensitive single mode optical fiber[J]. Optical Fiber Technology, 50, 225-232(2019).

[11] CAO Shanshan, GUO Chaoyang, XU Haitao et al. Preparation and performance of a small-sized bending-resistant optical fiber[J]. Acta Photonica Sinica, 50, 0506001(2021).

[12] WANG Derong. Study on the increase of optical fiber transmission loss caused by hydrogen diffusion[J]. Optical Fiber and Cable and Its Application Technology, 21-28(1999).

[13] XIE Kang, HUANG Daiyong, HAN Qingrong. Deuterium gas treatment eliminates optical fiber hydrogen sensitivity[J]. Post and Telecommunications Design Technology, 36-39(2004).

[14] CHEN Qiang, CHEN Haibin, LAN Xingling et al. The influence of optical fiber preform preparation on the attenuation of 1383nm after optical fiber deuterium treatment[C], 83-85(2017).

[15] JIANG Xihua, KANG Xiaojian, WANG Yao et al. Research on the hydrogen sensitivity of optical fiber[C], 188-197(2010).

[16] SUN Jiang, KANG Zexin, WANG Jing et al. Novel bending-resistant design of two-layer low-index trench fiber with parabolic-profile core[J]. Optics Express, 22, 18036-18043(2014).

[17] ZHANG Ben, WANG Xinyang. Causes and optimization techniques of communication optical fiber signal transmission attenuation[J]. Electronic Components & Information Technology, 4, 35-36(2020).

[18] JOSEPH A A, TIMOTHY H, ROBERT P D et al. Optical fiber resistant to hydrogen-induced attenuation[P].

[19] MODONE E, ROBA G. OH reduction in preforms by isotope exchange[J]. Electronics Letters, 17, 815-817(1981).

[20] LIU Xiaowei, ZHANG Hui, XU Zhengliang et al. Optimization of 200μm optical fiber deuterium gas treatment process[J]. Optical Fiber, Cable and Application Technology, 27-29+46(2018).