[2] [2] Cregan R F, Mangan B J, Knight J C, et al. Single-mode photonic band gap guidance of light in air[J]. Science, 1999, 285(5433): 1537-1539.

[3] [3] Mangan B, Farr L, Langford A, et al. Low loss (1.7 dB/km) hollow core photonic bandgap fiber[C]//Optical Fiber Communication Conference, 2004.

[4] [4] Amezcua-Correa R, Leon-Saval S G, Broderick N G R, et al. Control of surface modes in low loss hollow-core photonic bandgap fibers[J]. Optics Express, 2008, 16(2): 1142-1149.

[5] [5] Wheeler N V, Petrovich M N, Slavik R, et al. Wide-bandwidth, low-loss, 19-cell hollow core photonic band gap fiber and its potential for low latency data transmission[C]//National Fiber Optic Engineers Conference, 2012.

[6] [6] Baddela N K, Petrovich M, Jung Y, et al. First demonstration of a low loss 37-cell hollow core photonic bandgap fiber and its use for data transmission[C]//Lasers & Electro-optics, 2014.