A 20-Gb/s Quadrature Phase-Shift-Keying Real-Time Coherent System Based on a Subcarrier Optical Phase-Locked Loop

被引：10
|
作者：
Torrengo, Enrico [1 ]
Ferrero, Valter [1 ]
Camatel, Stefano [2 ]
机构：
[1] Politecn Torino, Dipartimento Elettron, PhotonLab, I-10129 Turin, Italy
[2] Nokia Siemens Networks, D-81547 Munich, Germany
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2009年 / 21卷 / 18期
关键词：
Homodyne detection; optical phase-locked loops (OPLLs); quadrature phase-shift keying (QPSK); HOMODYNE;
D O I：
10.1109/LPT.2009.2025388
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A 20-Gb/s quadrature phase-shift keying (QPSK) homodyne coherent system was analyzed and experimentally demonstrated. This system is based on subcarrier optical phase-locked loop(SC-OPLL) and it works in real time. In this letter, we present a brief optical receiver analysis and the transmission system performance in terms of simulations and experimental results. We also show that the QPSK system works but it is affected by loop propagation delay effects due to the prototypal implementation. The delay loop effects can be mitigated by an SC-OPLL integrated realization.
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页码：1296 / 1298
页数：3
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