P. C. Becker, N. A. Olsson, and J. R. Simpson, Erbium Doped Fiber Amplifiers: Fundamentals and Technology (Academic Press, 1999).
M. Söderlund, S. Tammela, and L. Tervonen, “Analysis of cladding-pumped L-band erbium-doped fiber amplifier performance,” in Optical Fiber Communication Conference, 2001 OSA Technical Digest Series (Optical Society of America, 2001), paper WDD20.
T. Morioka, “New generation optical infrastructure technologies: “EXAT initiative” towards 2020 and beyond,” OECC2009, paper FT4.
A. R. Chraplyvy, “The coming capacity crunch,” ECOC plenary talk, 2009.
R. Essiambre and A. Mecozzi, “Capacity limits in single mode fiber and scaling for spatial multiplexing,” in Optical Fiber Communication Conference, OSA Technical Digest (Optical Society of America, 2012), paper OW3D.1.
J. Fini, T. F. Taunay, B. Zhu, and M. F. Yan, “Low cross-talk design of multicore fibers,” in CLEO2010, OSA Technical Digest, paper CTuAA3.
K. Imamura, K. Mukasa, and T. Yagi, “Investigation on multi-core fibers with large Aeff and low micro bending loss,” OFC 2010 paper OWK6.
K. Takenaga, S. Tanigawa, N. Guan, S. Matsuo, K. Saitoh, and M. Koshiba, “Reduction of crosstalk by quasi-homogeneous solid multi-core Fiber,” in OFC2010, paper OWK7.
S. Inao, T. Sato, S. Sentsui, T. Kuroha, and Y. Nishimura, “Multicore optical fiber,” in Optical Fiber Communication, 1979 OSA Technical Digest Series (Optical Society of America, 1979), paper WB1.
T. Hayashi, T. Taru, O. Shimakawa, T. Sasaki, and E. Sasaoka, “Low-crosstalk and low-loss multi-core fiber utilizing fiber bend,” in Optical Fiber Communication Conference, OSA Technical Digest (CD) (Optical Society of America, 2011), paper OWJ3.
J. Sakaguchi, B. J. Puttnam, W. Klaus, Y. Awaji, N. Wada, A. Kanno, T. Kawanishi, K. Imamura, H. Inaba, K. Mukasa, R. Sugizaki, T. Kobayashi, and M. Watanabe, “19-core fiber transmission of 19x100x172-Gb/s SDM-WDM-PDM-QPSK signals at 305Tb/s,” in National Fiber Optic Engineers Conference, OSA Technical Digest (Optical Society of America, 2012), paper PDP5C.1.
Y. Tsuchida, K. Maeda, Y. Mimura, H. Matsuura, R. Miyabe, K. Aiso, and R. Sugizaki, “Amplification characteristics of a multi-core erbium-doped fiber amplifier,” in Optical Fiber Communication Conference, OSA Technical Digest (Optical Society of America, 2012), paper OM3C.3.
E. Snitzer, H. Po, F. Hakimi, R. Tumminelli, and B. C. McCollum, “Double-clad, offset core Nd fiber laser,” in Optical Fiber Sensors 2 of 1988 OSA Technical Digest Series (1988), postdeadline paper PD5.6.