110 km transmission of 160 Gbit/s RZ-DQPSK signals by midspan polarization-insensitive optical phase conjugation in a Ti:PPLN waveguide

被引：10
|
作者：
Hu, Hao [1 ]
Nouroozi, Rahman [2 ]
Ludwig, Reinhold [1 ]
Schmidt-Langhorst, Carsten [1 ]
Suche, Hubertus [2 ]
Sohler, Wolfgang [2 ]
Schubert, Colja [1 ]
机构：
[1] Heinrich Hertz Inst Nachrichtentech Berlin GmbH, Fraunhofer Inst Telecommun, D-10587 Berlin, Germany
[2] Univ Gesamthsch Paderborn, Fac Sci, D-33095 Paderborn, Germany
来源：
OPTICS LETTERS | 2010年 / 35卷 / 17期
关键词：
CONVERTER;
D O I：
10.1364/OL.35.002867
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate 160 Gbit/s return-to-zero (RZ) differential quarternary phase-shift keying (DQPSK) signal transmission over a 110 km single-mode fiber by taking advantage of mid-span optical phase conjugation (OPC). The technique is based on nonlinear wavelength conversion by cascaded second harmonic and difference frequency generation in a Ti:PPLN waveguide. Error-free operation with a negligible optical signal-to-noise ratio penalty for the signal after the OPC transmission without and with polarization scrambling was achieved. The results also show the polarization insensitivity of the OPC system using a polarization diversity scheme. (C) 2010 Optical Society of America
引用
收藏
页码：2867 / 2869
页数：3
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