作者
R Ryf, MA Mestre, S Randel, C Schmidt, AH Gnauck, R-J Essiambre, PJ Winzer, R Delbue, P Pupalaikis, A Sureka, Y Sun, X Jiang, DW Peckham, A McCurdy, R Lingle
发表日期
2012/10/1
期刊
IEEE Photonics Technology Letters
卷号
24
期号
21
页码范围
1965-1968
出版商
IEEE
简介
We transmitted five wavelength channels and six spatial and polarization modes over a 209-km-long hybrid few-mode fiber span. The fiber supports six spatial and polarization modes, and consists of a first section of large effective area depressed-cladding few-mode fiber followed by a graded-index few-mode fiber. The differential group delay is compensated by using fiber spools with differential group delay of opposite sign. Low-loss three-spot mode couplers are used to couple to the few-mode fiber, and backward pumped-distributed Raman amplification is used to overcome the fiber loss. The 40-Gb/s QPSK signals with an aggregate capacity of 1.2 Tb/s are recovered by coherent multiple-input–multiple-output off-line digital signal processing. The impulse response at various span lengths is compared and analyzed in detail.
引用总数
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R Ryf, MA Mestre, S Randel, C Schmidt, AH Gnauck… - IEEE Photonics Technology Letters, 2012