Coherent ONU based on 850 μm-long cavity-RSOA for next-generation ultra-dense access network  

作　　者：Guang Yong Chu Adolfo Lerín Iván N.Cano Victor Polo Josep Prat 

机构地区：[1]Department of Signal Theory and Communications,Universitat Politècnica de Catalunya

出　　处：《Chinese Optics Letters》2016年第5期19-23,共5页中国光学快报（英文版）

基　　金：supported by European Union’s Seventh Framework Program FP7 COCONUT Project(GA318515);the Ministry of Science and Innovation under Grant No.TEC2011-25215(ROMULA)Project;TEC2015-70835(FLIPER) Project;PhD fellowship donated by China Scholarship Council

摘　　要：In this Letter, an efficient bidirectional differential phase-shift keying （DPSK）--DPSK transmission for a ultra- dense wavelength division-multiplexed passive optical network is proposed. A single distributed feedback laser at the optical network unit （ONU） is used both as the local laser for downlink coherent detection and the optical carrier for uplink. Phase-shift keying is generated using a low-cost reflective semiconductor optical amplifier （RSOA） at the ONU. The RSOA chip has the bandwidth of 4.7 GHz at the maximum input power and bias current. For uplink transmission, the sensitivity of the RSOA chip reaches -48.2 dBm at the level of bit error rate = 10^-3 for back-to-back, and the penalty for 50 km transmission is less than 1 dB when using polarization diversity.In this Letter, an efficient bidirectional differential phase-shift keying （DPSK）--DPSK transmission for a ultra- dense wavelength division-multiplexed passive optical network is proposed. A single distributed feedback laser at the optical network unit （ONU） is used both as the local laser for downlink coherent detection and the optical carrier for uplink. Phase-shift keying is generated using a low-cost reflective semiconductor optical amplifier （RSOA） at the ONU. The RSOA chip has the bandwidth of 4.7 GHz at the maximum input power and bias current. For uplink transmission, the sensitivity of the RSOA chip reaches -48.2 dBm at the level of bit error rate = 10^-3 for back-to-back, and the penalty for 50 km transmission is less than 1 dB when using polarization diversity.

关 键 词：ONU RSOA Coherent ONU based on 850 m-long cavity-RSOA for next-generation ultra-dense access network 

分 类 号：TN929.1[电子电信—通信与信息系统]