TY - JOUR

T1 - Experimental demonstrations of DSP-enabledflexibility, adaptability and elasticity ofmulti-channel >72Gb/s over 25 km IMDDtransmission systems

AU - Jin, Wei

AU - Zhong, Zhuqiang

AU - Jiang, Shan

AU - He, Jiaxiang

AU - Hu, S.H.

AU - Chang, Da

AU - Giddings, Roger

AU - Hong, Han

AU - Jin, Xianqing

AU - O'Sullivan, Maurice

AU - Durrant, Tim

AU - Trewern, J.

AU - Mariani, G.

AU - Tang, Jianming

PY - 2021/11/30

Y1 - 2021/11/30

N2 - DSP-enabled multi-channel aggregation techniques are promising for cost-effectively improving the flexibility, adaptability and elasticity of fronthaul transport networks. By utilizing orthogonal digital filtering in multi-channel aggregation in IMDD transmission systems, two DSP-enabled matching filter (MF)-free multi-channel aggregation techniques respectively based on SSB OFDM and orthogonal DSB OFDM have been reported, the SSB (DSB) technique has, however, a drawback of relatively high digital filter DSP complexity (reduced adaptability to physical layer system characteristics). To effectively overcome these drawbacks associated with these two techniques, in this paper, a DSP-enabled MF-free adaptively variable SSB/DSB OFDM multi-channel aggregation technique is proposed and experimentally demonstrated, in which >72Gb/s@25km IMDD transmissions have been achieved. This work also evaluates, for the first time, the flexibility, adaptability, and elasticity of the orthogonal digital filtering-enabled multi-channel aggregation techniques. The results show that the proposed technique not only maintains the SSB technique’s excellent adaptability but also possesses the DSB technique’s low digital filter DSP complexity features.

AB - DSP-enabled multi-channel aggregation techniques are promising for cost-effectively improving the flexibility, adaptability and elasticity of fronthaul transport networks. By utilizing orthogonal digital filtering in multi-channel aggregation in IMDD transmission systems, two DSP-enabled matching filter (MF)-free multi-channel aggregation techniques respectively based on SSB OFDM and orthogonal DSB OFDM have been reported, the SSB (DSB) technique has, however, a drawback of relatively high digital filter DSP complexity (reduced adaptability to physical layer system characteristics). To effectively overcome these drawbacks associated with these two techniques, in this paper, a DSP-enabled MF-free adaptively variable SSB/DSB OFDM multi-channel aggregation technique is proposed and experimentally demonstrated, in which >72Gb/s@25km IMDD transmissions have been achieved. This work also evaluates, for the first time, the flexibility, adaptability, and elasticity of the orthogonal digital filtering-enabled multi-channel aggregation techniques. The results show that the proposed technique not only maintains the SSB technique’s excellent adaptability but also possesses the DSB technique’s low digital filter DSP complexity features.

U2 - 10.1364/OE.440115

DO - 10.1364/OE.440115

M3 - Article

VL - 29

SP - 41363

EP - 41377

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 25

ER -