Transmission of 112 Gb/s dual-carrier DQPSK signal over 10 Gb/s-based WDM optical links
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- 作者：Sun Hyok Chang ; shchang@etri.re.kr ; Hwan Seok Chung ; Jyung Chan Lee ; Kwangjoon Kim ; Jong Hyun Lee
- 关键词：Optical fiber communication ; Optical modulation ; Polarization
- 刊名：Optical Fiber Technology
- 出版年：2013
- 出版时间：March, 2013
- 年：2013
- 卷：19
- 期：2
- 页码：67-74
- 全文大小：952 K
文摘
The 112 Gb/s dual-carrier differential quadrature phase shift keying (DC-DQPSK) optical transceiver, which does not need digital signal processing and coherent detection, is proposed for cost-effective 100G transport solution. In this paper, we describe upgrade schemes of 10 Gb/s-based WDM optical links by adopting 112 Gb/s DC-DQPSK transceiver, while the dispersion of the optical links is compensated 100 % at each span. Method of introducing the DC-DQPSK signal into single grid of 100 GHz spaced WDM link is demonstrated. Performance sufficient for error-free operation after forward error correction is achieved over 640 km standard single mode fiber (SSMF) link. In another method, we experimentally investigate the transmission performance with co-propagating 10.7 Gb/s on-off-keying (OOK) signals over 1000 km of SSMF when the dual carriers occupy two channel grids separately. Excellent tolerance to the nonlinearities impacted by the OOK signals and low optical signal-to-noise ratio requirement are verified to demonstrate superior transmission performance in 10 Gb/s-based WDM links.