[1] [1] Fercher A F, Drexler W, Hitzenberger C K, et al.. Optical coherence tomography-principles and applications[J]. Reports on Progress in Physics, 2003, 66(2): 239.

[2] [2] Tanaka M, Hirano M, Murashima K, et al.. 1.7-μm spectroscopic spectral-domain optical coherence tomography for imaging lipid distribution within blood vessel[J]. Optics Express, 2015, 23(5): 6645-6655.

[3] [3] Bouma B E, Tearney G J. Clinical imaging with optical coherence tomography[J]. Academic Radiology, 2002, 9(8): 942-953.

[4] [4] Fujimoto J G, Boppart S A, Tearney G J, et al.. High resolution in vivo intra-arterial imaging with optical coherence tomography[J]. Heart, 1999, 82(2): 128-133.

[5] [5] Tearney G J, Yabushita H, Houser S L, et al.. Quantification of macrophage content in atherosclerotic plaques by optical coherence tomography[J]. Circulation, 2003, 107(1): 113-119.

[6] [6] Boppart S A, Luo W, Marks D L, et al.. Optical coherence tomography: feasibility for basic research and image-guided surgery of breast cancer[J]. Breast Cancer Research and Treatment, 2004, 84(2): 85-97.

[7] [7] Zuluaga A F, Follen M, Boiko I, et al.. Optical coherence tomography: A pilot study of a new imaging technique for noninvasive examination of cervical tissue[J]. American Journal of Obstetrics and Gynecology, 2005, 193(1): 83-88.

[8] [8] Shi Boya, Meng Zhuo, Liu Tiegen, et al.. Non-distorted imaging depth of optical coherence tomography system in human dental tissues[J]. Acta Optica Sinica, 2014, 34(2): 0217001.

[9] [9] Yang Shanshan, Zhu Rui, Mi Lei, et al.. Application of optical coherence tomography in the detection of the mural[J]. Acta Optica Sinica, 2015, 35(5): 0511005.

[10] [10] Alexander V V, Ke K, Xu Z, et al.. Photothermolysis of sebaceous glands in human skin ex vivo with a 1708 nm Raman fiber laser and contact cooling[J]. Lasers in Surgery and Medicine, 2011, 43(6): 470-480.

[11] [11] Workman J, Jr, Weyer L. Practical guide and spectral atlas for interpretive near-infrared spectroscopy[M]. Boca Raton: CRC Press, 2012.

[12] [12] Bajraszewski T, Wojtkowski M, Szkulmowski M, et al.. Improved spectral optical coherence tomography using optical frequency comb[J]. Optics Express, 2008, 16(6): 4163-4176.

[13] [13] Jung E J, Park J S, Jeong M Y, et al.. Spectrally-sampled OCT for sensitivity improvement from limited optical power[J]. Optics Express, 2008, 16(22): 17457-17467.

[14] [14] Quan Z, Gao C X, Guo H T, et al.. 400 mW narrow-linewidth Tm-doped silica fiber laser output near 1750 nm with volume Bragg grating[J]. Scientific Reports, 2015, 5: 12034.

[15] [15] Daniel J M, Simakov N, Tokurakawa M, et al.. Ultra-short wavelength operation of a two-micron thulium fiber laser[C]. 2014 Conference on Lasers and Electro-Optics, 2014: SW1N. 2.

[16] [16] Li Z, Alam S, Daniel J M O, et al.. 90 nm gain extension towards 1.7 μm for diode-pumped silica-based thulium-doped fiber amplifiers[C]. European Conference on Optical Communication, 2014: 1-3.

[17] [17] Li Z, Jung Y, Simakov N, et al.. Extreme short wavelength operation (1.65-1.7 μm) of silica-based thulium-doped fiber amplifier[C]. IEEE Optical Fiber Communication Conference, 2015.

[18] [18] Abeeluck A K, Headley C, Jrgensen C G. High-power supercontinuum generation in highly nonlinear, dispersion-shifted fibers by use of a continuous-wave Raman fiber laser[J]. Optics letters, 2004, 29(18): 2163-2165.

[19] [19] Kawagoe H, Ishida S, Aramaki M, et al.. Development of a high power supercontinuum source in the 1.7 μm wavelength region for highly penetrative ultrahigh-resolution optical coherence tomography[J]. Biomedical Optics Express, 2014, 5(3): 932-943.

[20] [20] Dong P, Gui L, Xiao X, et al.. Experimental investigation of supercontinuum generation in highly nonlinear dispersion-shifted fiber pumped by spectrum-sliced amplified spontaneous emission[J]. Optics Communications, 2009, 282(14): 3007-3011.

[21] [21] Tilma B W, Jiao Y, Kotani J, et al.. Integrated tunable quantum-dot laser for optical coherence tomography in the 1.7 wavelength region[J]. IEEE Journal of Quantum Electronics, 2012, 48(2): 87-98.

[22] [22] Yamada M, Ono H, Ono J. 1.7 μm band optical fiber amplifier[C]. IEEE Optical Fiber Communication Conference, 2014: 1-3.

[23] [23] Dianov E M, Firstov S V, Alyshev S V, et al.. A new bismuth-doped fibre laser, emitting in the range 1625-1775 nm[J]. Quantum Electronics, 2014, 44(6): 503-504.

[24] [24] Agrawal G P. Nonlinear fiber optics[M]. New York: Academic Press, 2007.

[25] [25] Long Qingyun, Wu Tingwan, Hu Sumei, et al.. Threshold characteristics of forward-pumped fiber Raman amplifier[J]. Laser & Optoelectronics Progress, 2014, 51(3): 030603.