[1] Intergovernmental Panel on Climate Change (IPCC), Climate change 2007: summary for policymakers. Cambridge, UK: Cambridge University Press, 2007: 125.
[2] S. Holloway, J. M. Pearce, V. L. Hards, et al. “Natural emissions of CO2 from the geosphere and their beating on the geological storage of carbon dioxide,” Energy, 2007, 32(7): 1194-1201.
[3] Y. L. Hoo, W. Jin, C. Shi, H. L. Ho, D. N. Wang, and S. C. Ruan, “Design and modeling of a photonic crystal fiber gas sensor,” Applied Optics, 2003, 42(18): 3509-3515.
[4] C. Singh, Y. Shibata, and M. Ogita, “A theoretical study of tapered, porous clad optical fibers for detection of gases,” Sensors and Actuators B: Chemical, 2003, 92(l-2): 44-48.
[5] X. Y. Bao, “Optical fiber sensors based on Brillouin scattering,” Optics and Photonics News, 2009, 20(9): 40-46.
[6] T. Miyashita, T. Edahiro, S. Takahashi, M. Horiguchi, and K. Masuno, “Eccentric-core glass optical waveguide,” Journal of Applied Physics, 1974, 45(2): 808-809.
[7] L. B. Yuan, X. L. Zhu, T. Zhang, F. J. Tian, Q. Dai, and J. Yang, “Capillary optical fiber linking approach for biosensors,” in Proc. SPIE, vol. 7503: pp. 750372, 2009.
[8] L. B. Yuan, Z. H. Liu, J. Yang, and C. Y. Guan, “Bi-tapered fiber coupling characteristics between single mode single-core fiber and multi-core fiber,” Applied Optics, 2008, 47(18): 3307-3312.