title: 25 Tb/s transmission over 5,530 km using 16QAM at 5.2 b/s/Hz spectral efficiency.
abstract: We transmit 250x100G PDM RZ-16QAM channels with 5.2 b/s/Hz spectral efficiency over 5,530 km using single-stage C-band EDFAs equalized to 40 nm. We use single parity check coded modulation and all channels are decoded with no errors after iterative decoding between a MAP decoder and an LDPC based FEC algorithm. We also observe that the optimum power spectral density is nearly independent of SE, signal baud rate or modulation format in a dispersion uncompensated system.
authors: TE SubCom, 250 Industrial Way West, Eatontown, NJ 07724, USA. jcai@subcom.com
authors: J-X
authors: JX
authors: Cai
authors: H G
authors: HG
authors: Batshon
authors: H
authors: H
authors: Zhang
authors: C R
authors: CR
authors: Davidson
authors: Y
authors: Y
authors: Sun
authors: M
authors: M
authors: Mazurczyk
authors: D G
authors: DG
authors: Foursa
authors: O
authors: O
authors: Sinkin
authors: A
authors: A
authors: Pilipetskii
authors: G
authors: G
authors: Mohs
authors: Neal S
authors: NS
authors: Bergano
mesh_terms: D003195:Computer Communication Networks / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D016247:Information Storage and Retrieval / Q000379:methods*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*