RSOA被认为是实现无源光网络PON中ONU无色化的一种重要的光学器件,但常见的RSOA的调制带宽往往只有1.5GHz左右,严重制约了PON系统的上行链路信号带宽。文章提出了两种有效提高RSOA调制带宽方案:使用光带通滤波器或者SOA与RSOA级联的均...RSOA被认为是实现无源光网络PON中ONU无色化的一种重要的光学器件,但常见的RSOA的调制带宽往往只有1.5GHz左右,严重制约了PON系统的上行链路信号带宽。文章提出了两种有效提高RSOA调制带宽方案:使用光带通滤波器或者SOA与RSOA级联的均衡原理,提高上行信号调制带宽和系统功率预算。通过深入的数学模型分析和大量的相关实验,验证了这两种方案的正确性和可行性,同时实验结果表明使用光带通滤波器或者SOA可以使RSOA调制带宽分别展宽0.15 GHz和0.3GHz,并将功率预算分别提高12 d B和17d B。展开更多
In this paper, we overview the principle of Orthogonal Frequency Division Multiplexing Passive Optical Network （OFDM-PON） systems, with a particular focus on upstream architectures capable of achieving 10Gbit/s colo...In this paper, we overview the principle of Orthogonal Frequency Division Multiplexing Passive Optical Network （OFDM-PON） systems, with a particular focus on upstream architectures capable of achieving 10Gbit/s colorless upstream transmission using Reflective Semiconductor Optical Amplifier （RSOA）. We propose an architecture of RSOA based OFDM-PON which can achieve 10Gbit/s upstream transmission over a single wavelength. A novel Dynamic Subcarrier Assignment （DSA） algorithm is also proposed to support my architecture, namely Service based Polling in Pipeline （SPP） dynamic subcarrier algorithm. A simulation was conducted to study the performance of SPP algorithm. Compared with the traditional dynamic bandwidth allocation algorithms, service based polling meets the quality of in pipeline algorithm service requirements excellently, and adapts orthogonal frequency division multiplexing passive optical network better with higher bandwidth efficiency and lower algorithm complexity.展开更多
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 feedb...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.展开更多
文摘RSOA被认为是实现无源光网络PON中ONU无色化的一种重要的光学器件,但常见的RSOA的调制带宽往往只有1.5GHz左右,严重制约了PON系统的上行链路信号带宽。文章提出了两种有效提高RSOA调制带宽方案:使用光带通滤波器或者SOA与RSOA级联的均衡原理,提高上行信号调制带宽和系统功率预算。通过深入的数学模型分析和大量的相关实验,验证了这两种方案的正确性和可行性,同时实验结果表明使用光带通滤波器或者SOA可以使RSOA调制带宽分别展宽0.15 GHz和0.3GHz,并将功率预算分别提高12 d B和17d B。
基金supported by NSFC Project No.61372119863 Program No.2011AA01A104Doctoral Scientific Fund Project of the Ministry of Education of China(No.20120005110010)
文摘In this paper, we overview the principle of Orthogonal Frequency Division Multiplexing Passive Optical Network （OFDM-PON） systems, with a particular focus on upstream architectures capable of achieving 10Gbit/s colorless upstream transmission using Reflective Semiconductor Optical Amplifier （RSOA）. We propose an architecture of RSOA based OFDM-PON which can achieve 10Gbit/s upstream transmission over a single wavelength. A novel Dynamic Subcarrier Assignment （DSA） algorithm is also proposed to support my architecture, namely Service based Polling in Pipeline （SPP） dynamic subcarrier algorithm. A simulation was conducted to study the performance of SPP algorithm. Compared with the traditional dynamic bandwidth allocation algorithms, service based polling meets the quality of in pipeline algorithm service requirements excellently, and adapts orthogonal frequency division multiplexing passive optical network better with higher bandwidth efficiency and lower algorithm complexity.
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+1 种基金TEC2015-70835(FLIPER) ProjectPhD fellowship donated by China Scholarship Council
文摘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.
