SPM compensation for long-haul CO-OFDM systems with midlink optical phase conjugation

详细信息    查看全文

• 作者：Xuejun Liu^a ; ^{liuxuejun.china@gmail.com} ; Haiying Luan^b ; ^{haiying.luan@gmail.com} ; Xuehong Lin^c ; ^{xhlin@bupt.edu.cn} ; Bo Lan^a ; ^{lanbo@bipt.edu.cn} ; Bo Dai^a ; ^{daibo@bipt.edu.cn}
• 关键词：CO-OFDM ; Optical phase conjugation (OPC) ; SPM ; Semiconductor optical amplifier (SOA)
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2013
• 出版时间：July, 2013
• 年：2013
• 卷：124
• 期：14
• 页码：1892-1896
• 全文大小：1391 K

文摘

Midlink optical phase conjugation (M-OPC) based on four wave mixing (FWM) in semiconductor optical amplifier (SOA) can be used to compensate for the fiber nonlinearity effect in CO-OFDM systems. Simulation of 40 Gb/s CO-OFDM systems without optical dispersion compensation is presented. For a single-channel system, even greater benefits are obtained and the nonlinear limits are significantly decreased: the maximum Q can be increased by 3 dB for all transmission distances greater than 2400 km, the nonlinear threshold (NLT) (for Q > 10 dB) is increased by >4 dB. Due to cross phase modulation (XPM) from neighbouring WDM channels, the maximum Q and NLT are increased by about 1.1 dB and 1 dB for 50-GHz-spacing WDM systems separately. These results show that M-OPC can mitigate the fiber nonlinearity impairment for both single-channel and WDM systems.