一种新型的低成本双向传输相干无源光网络系统

doi:10.11959/j.issn.1000-0801.2016202

Abstract

Abstract:

Based on the coherent optical reception technology,a cost-effective structure for the optical network unit (ONU) transceivers in ultra-dense wavelength division multiplexing passive optical network using a single directly modulated laser (DML)was proposed.To reduce the number of required light sources,only one DML was used in both upstream and downstream links.By experimental investigations,the impacts of driving amplitude and bias current on DML's performance were analyzed.Meanwhile,the impact of frequency spacing between upstream and downstream signal and the Rayleigh backscattering interference on system performance were investigated.The method has better performance of system receiving and can effectively reduce the cost and complexity of coherent passive optical network system.

Key words: digital coherent detection, passive optical network, optical access network

Shunli QIU,Yi YANG,Rong HU. A novel low cost bidirectional transmission coherent passive optical network system[J]. Telecommunications Science, 2016, 32(7): 146-151.

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A novel low cost bidirectional transmission coherent passive optical network system

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