DPSK光纤通信系统非线性效应问题的研究
摘要
随着人们对大容量、长距离的通信系统要求的不断提高,40Gb/s的光纤通信系统已经逐渐开始从实验室走向商用。随着容量和距离的增加,非线性效应对光纤通信系统传输性能的影响越来越突出,而采用DPSK调制方式被认为是降低非线性效应影响的一项重要的技术。本文主要研究了DPSK光纤通信系统的非线性效应问题。
为了对DPSK光纤通信系统非线性效应问题进行研究,本文提出采用补偿线性效应,降低线性效应对系统影响的方法。利用OptiSystem软件对系统进行仿真,设计了单信道DPSK光纤通信系统,观察自相位调制(SPM)对系统传输性能的影响;设计了多信道DWDM系统,观察信道间交叉相位调制(XPM)、四波混频(FWM)对系统传输性能的影响。
本文首先对DPSK光纤通信系统的理论基础进行了讨论;然后,建立DPSK光纤通信系统理论模型,通过OptiSystem软件平台模拟40Gb/s光纤通信系统,设计单信道DPSK光纤通信系统传输系统,分别输入RZ-DPSK信号与CSRZ-DPSK信号,比较了不同入纤功率的仿真结果,确定了最优的入纤功率和阈值功率;接着比较了不同距离单信道系统RZ-DPSK与CSRZ-DPSK的Q值、误码率与眼图,得出了RZ-DPSK与CSRZ-DPSK抵抗SPM差不多的结论;最后,设计基于DWDM的DPSK光纤通信系统模型,比较在8信道和16信道中,不同传输距离RZ-DPSK与CSRZ-DPSK的Q值、误码率与眼图,结果表明,CSRZ-DPSK抵抗XPM,FWM性能优于RZ-DPSK,更适合应用于DWDM系统。
With the continued increase of the requirements of the large capacity, long-distance communication system, the 40Gb/s optical fiber communication system has gradually begun to commercial from the laboratory. With the increase of capacity and distance, the nonlinear effects of the transmission performance of optical fiber communication systems have become increasingly prominent, while the use of DPSK modulation is considered to be an important technical resistance to nonlinear effects. This thesis studies the nonlinear effects of a DPSK optical fiber communication systems.
To study the nonlinear effects of DPSK optical fiber communication systems, in the thesis, the method is to compensate the linear effects of system to reduce the impact of the linear effects of the system. OptiSystem is applied to simulate and design the system. The design of single channel DPSK optical fiber communication systems is applied to observe the impact of self phase modulation (SPM) on system performance; The design of multi-channel DWDM system is applied to observe the impact of cross phase modulation (XPM), four wave mixing (FWM) on system performance.
First, in the thesis, the theoretical basis of DPSK optical fiber communication system is discussed; Second, the model of DPSK optical fiber communication system is established, the simulation of 40Gb/s system is applied on OptiSystem software platform. The design of single channel DPSK optical fiber communication system, respectively, the input of RZ-DPSK signal and CSRZ-DPSK signal differently into the fiber power of simulation results to determine the appropriate fiber input power and threshold power; Third, in different distance of single channel system, the compare of Q factor, bit error rate and eye diagram conclude that RZ-DPSK and CSRZ-DPSK have the similar resistance of SPM; Finally, the design is based on DWDM DPSK optical fiber communication system model, in different distance, in the 8 channels and 16 channels, the compare of Q factor, bit error rate and eye diagram come to the conclusion that CSRZ-DPSK have a better resistance of XPM and FWM than RZ-DPSK, and CSRZ-DPSK is more suitable for DWDM systems.
为了对DPSK光纤通信系统非线性效应问题进行研究,本文提出采用补偿线性效应,降低线性效应对系统影响的方法。利用OptiSystem软件对系统进行仿真,设计了单信道DPSK光纤通信系统,观察自相位调制(SPM)对系统传输性能的影响;设计了多信道DWDM系统,观察信道间交叉相位调制(XPM)、四波混频(FWM)对系统传输性能的影响。
本文首先对DPSK光纤通信系统的理论基础进行了讨论;然后,建立DPSK光纤通信系统理论模型,通过OptiSystem软件平台模拟40Gb/s光纤通信系统,设计单信道DPSK光纤通信系统传输系统,分别输入RZ-DPSK信号与CSRZ-DPSK信号,比较了不同入纤功率的仿真结果,确定了最优的入纤功率和阈值功率;接着比较了不同距离单信道系统RZ-DPSK与CSRZ-DPSK的Q值、误码率与眼图,得出了RZ-DPSK与CSRZ-DPSK抵抗SPM差不多的结论;最后,设计基于DWDM的DPSK光纤通信系统模型,比较在8信道和16信道中,不同传输距离RZ-DPSK与CSRZ-DPSK的Q值、误码率与眼图,结果表明,CSRZ-DPSK抵抗XPM,FWM性能优于RZ-DPSK,更适合应用于DWDM系统。
With the continued increase of the requirements of the large capacity, long-distance communication system, the 40Gb/s optical fiber communication system has gradually begun to commercial from the laboratory. With the increase of capacity and distance, the nonlinear effects of the transmission performance of optical fiber communication systems have become increasingly prominent, while the use of DPSK modulation is considered to be an important technical resistance to nonlinear effects. This thesis studies the nonlinear effects of a DPSK optical fiber communication systems.
To study the nonlinear effects of DPSK optical fiber communication systems, in the thesis, the method is to compensate the linear effects of system to reduce the impact of the linear effects of the system. OptiSystem is applied to simulate and design the system. The design of single channel DPSK optical fiber communication systems is applied to observe the impact of self phase modulation (SPM) on system performance; The design of multi-channel DWDM system is applied to observe the impact of cross phase modulation (XPM), four wave mixing (FWM) on system performance.
First, in the thesis, the theoretical basis of DPSK optical fiber communication system is discussed; Second, the model of DPSK optical fiber communication system is established, the simulation of 40Gb/s system is applied on OptiSystem software platform. The design of single channel DPSK optical fiber communication system, respectively, the input of RZ-DPSK signal and CSRZ-DPSK signal differently into the fiber power of simulation results to determine the appropriate fiber input power and threshold power; Third, in different distance of single channel system, the compare of Q factor, bit error rate and eye diagram conclude that RZ-DPSK and CSRZ-DPSK have the similar resistance of SPM; Finally, the design is based on DWDM DPSK optical fiber communication system model, in different distance, in the 8 channels and 16 channels, the compare of Q factor, bit error rate and eye diagram come to the conclusion that CSRZ-DPSK have a better resistance of XPM and FWM than RZ-DPSK, and CSRZ-DPSK is more suitable for DWDM systems.
引文
[1] M F C Stephens,R V Penty.Low-input power wavelength conversion at 10Gbit/s using an integrated amplifier/DFB laser and subsequent transmission over 375km of fiber[J].IEEE Photonics Technology Letters,1998,10(6):878-880.
[2] J Yamawaku,H Takara,T Ohara.Simultaneous 25 GHz-spaced DWDM wavelength conversion of 1.03 Tbit/s (103×10 Gbit/s) signals in PPLN waveguide[J].Electronics Letters,2003, 39(15): 1144-1145.
[3] G C Gupta,L Wang,L Mizuhara O,et al.3.2-Tb/s(40×80Gb/s) tranmission with spectral efficiency of 0.8 b/s/Hz over 21×100km of dispersion-managed high local dispersion fiber using all-Raman amplified spans[J]. IEEE Photonics Technology Letters,2003,15(7):996-998.
[4] G Vareille,B Jukien,F Pitel,et al.3.65 Tbit/s(365×11.6Gbit/s)transmission experiment over 6850km using 22.2GHz channel spacing in NRZ format[J]. Electronics Letters,2001,6:14-15.
[5] Demissie Jobir Gelmecha.高速光纤通信在非线性色散影响下的传输特性[D].湖北:华中师范大学物理科学与技术学院,2011.
[6] Wu Lin,Zhang Fan,Li Li,Chen Zhang yuan,Xu An shi. Amplitude regeneration of NRZ-DPSK and RZ-DPSK signals based on saturation of four wave mixing in highly nonlinear fiber[J].光子学报,2010,39(5):809-810.
[7] P J Winze, Hoon Kim. Degradations in balanced DPSK receivers[J].IEEE Photonics Technology Letters,2003, 15(9):1282-1284.
[8] K S Shanmugan.An update on software packages for simulation of communication systems[J]. IEEE Journal on Selected Areas in Communications,1988,2:5-12.
[9]卢宏旺.高速DPSK与相干光通信系统研究[D].天津:天津大学,2009.
[10] T Zhang,R Hicks.Simulator models lightwave systems atmicrowave rates[J].Microwaves and RF,1991,11:114-119.
[11]熊湘军. DPSK光纤通信系统的分析和模拟实现[D].北京:华北电力大学,2008.
[12] M Daikoku, T Otani,and M Suzuki.160Gb/s four WDM quasi linear transmission over 225-km NZ-DSF with 75km spacing[J]. IEEE Photonics Technology Letters,2003,15(8):1165-1167.
[13]胡先志.构建高速通信光网络关键技术[M].北京:电子工业出版社,2008:47-63.
[14] J P Gordon and L F Mollenauer. Phase noise in photonics communications systems using linear amplifier[J].Opt.Lett,1990, 15:1351-1355.
[15] H Kim and P J Winzer.Robustness to laser frequency offset in direct-detection DPSK and DQPSK system[J].Lightwave Technol, 2003, 21:1887-1891.
[16]齐鸣. DPSK信号解调及传输特性的研究[D].湖北:华中科技大学,2007.
[17]金星.高速率相干光通信调制与发射技术的研究[D].吉林:长春理工大学,2010.
[18] Yoav Yadin, Moshe Nazarathy. Multichip differential phase-shift-keyed transmission over (non)linear optical channels[J]. Journal Of Lightwave Techology,2007,25(6):1431-1440.
[19] A H Gnauck, P J Winzer, Optical phase-shift-keyed transmission[J]. Lightwave Technol,2005, 23(1):115-130.
[20] C A Brackett.Dense wavelength division multiplexing networks:Principles and applications[J]. IEEE J.Sel.Areas Commun,1990,8(6):948-964.
[21] D Lever,A Arie.Tunable chromatic dispersion compensator[J].Electrical and Electronics Engineers in Israel,2004,(02):244-246.
[22]苏翼凯,冷鹿峰.高速光纤传输系统[M].上海:上海交通大学出版社,2009:38-62.
[23] M F C Stephens,R V Penty.All-optical regeneration and wavelength conversion in an integrated semiconductor optical amplifier/distributed-feedback laser[J].IEEE Photonics Technology Letters,1999,11(8):979-981.
[24] Yuttaka Miyaamoto, Tomoyoshi Kataoka, Kazushige Yonenaga.WDM field trials of 43Gb/s/channel transport system for optical transport network[J].Journal of lightwave Technology,2002,12(20):2115-2128,
[25]宋永东,张建华.基于MATLAB的2DPSK低频感应通信系统仿真设计[J].通信技术.2009,42(9):26-28.
[26] C A Brecket.Dense wavelength division multiplexing networks:principlesand applications[J]. IEEE Journal on Selected Areas in Communications, 1990, 8: 948-963.
[27]王欣.高速光纤通信系统调制格式的研究[D].湖北:华中科技大学,2007.
[28] D Chang, G C Yang,and W C Kwong. Determination of FWM products unequal spaced channel WDM lightwave systems[J].Journal of Lightwave Technology, 2000,18 (12): 2113-2122.
[29] K Innoue. Four-wave mixing in an optical fiber in the zero-dispersion wavelength region[J]. Journal of Lightwave Technology, 1992, 10(11):1553-1561.
[30] H Suzaki, N Ohteru, and N Takachio. 10 Gb/s WDM transmissions based on extended method of unequally spaced channel allocation around the zero-dispersion wavelength region[J]. IEEE Photonics Technology Letters, 1999,11(12): 1677-1679.
[31] A R Chraplyvi. Limitations on lightwave communications imposed by optical fiber nonlinearities[J]. Journal of Lightwave Technology, 1990, 8: 1548-1557.
[32]雷波. WDM超长距离传输系统中新型光调制格式的研究[D].北京:北京邮电大学,2006.
[33]武晓霞.基于DPSK的新型调制格式在高速光纤传输系统中的应用[D].北京:北京邮电大学,2006.
[34] K Yonenaga, S Aisawa, N Takachio and K Twashita. Reduction of four-wave mixing induced penalty in unequally spaced WDM transmission system by using optical DPSK[J]. Electronic Letters.1996,32(11):2118-2119.
[35]刘竹. DPSK和DQPSK光纤通信系统的研究和比较[D].四川:电子科技大学,2009.
[36]周振,徐铭,蒲骁.基于光纤中四波混频DPSK系统相位噪声提取检测和抑制[J].量子电子学报,2011,28(1):115-121.
[37] Xing Wei, Xiang Liu, and Chris Xu. Numerical simulation of the SPM penalty in a 10Gb/s RZ-DPSK system[J]. IEEE Photonics Technology Letters,2003,15(11):1636-1638.
[38] Yoav Yadin, Alberto Bilenca, and Moshe Nazarathy. Soft detection of multichip DPSK over the nonlinear fiber-optic channel[J]. IEEE Photonics Technology Letters,2005,17(9):2001-2002.
[39] Hidenori Taga, Seng Sheng Shu, Jyun Yi Wu, and Wei-Tong Shih. A theoretical study of the effect of the sispersion map upon a long-haul RZ-DPSK transmission system[J]. IEEE Photonics Technology Letters,2007,19(12):2060-2062.
[40] Hsin Min Wang and Hidenori Taga. An experimental study of XPM and SPM upon a long-haul RZ-DSPK transmission system with a block-type dispersion map[J]. Journal of Lightwave Technology,2010,28(22):3220-3225.
[2] J Yamawaku,H Takara,T Ohara.Simultaneous 25 GHz-spaced DWDM wavelength conversion of 1.03 Tbit/s (103×10 Gbit/s) signals in PPLN waveguide[J].Electronics Letters,2003, 39(15): 1144-1145.
[3] G C Gupta,L Wang,L Mizuhara O,et al.3.2-Tb/s(40×80Gb/s) tranmission with spectral efficiency of 0.8 b/s/Hz over 21×100km of dispersion-managed high local dispersion fiber using all-Raman amplified spans[J]. IEEE Photonics Technology Letters,2003,15(7):996-998.
[4] G Vareille,B Jukien,F Pitel,et al.3.65 Tbit/s(365×11.6Gbit/s)transmission experiment over 6850km using 22.2GHz channel spacing in NRZ format[J]. Electronics Letters,2001,6:14-15.
[5] Demissie Jobir Gelmecha.高速光纤通信在非线性色散影响下的传输特性[D].湖北:华中师范大学物理科学与技术学院,2011.
[6] Wu Lin,Zhang Fan,Li Li,Chen Zhang yuan,Xu An shi. Amplitude regeneration of NRZ-DPSK and RZ-DPSK signals based on saturation of four wave mixing in highly nonlinear fiber[J].光子学报,2010,39(5):809-810.
[7] P J Winze, Hoon Kim. Degradations in balanced DPSK receivers[J].IEEE Photonics Technology Letters,2003, 15(9):1282-1284.
[8] K S Shanmugan.An update on software packages for simulation of communication systems[J]. IEEE Journal on Selected Areas in Communications,1988,2:5-12.
[9]卢宏旺.高速DPSK与相干光通信系统研究[D].天津:天津大学,2009.
[10] T Zhang,R Hicks.Simulator models lightwave systems atmicrowave rates[J].Microwaves and RF,1991,11:114-119.
[11]熊湘军. DPSK光纤通信系统的分析和模拟实现[D].北京:华北电力大学,2008.
[12] M Daikoku, T Otani,and M Suzuki.160Gb/s four WDM quasi linear transmission over 225-km NZ-DSF with 75km spacing[J]. IEEE Photonics Technology Letters,2003,15(8):1165-1167.
[13]胡先志.构建高速通信光网络关键技术[M].北京:电子工业出版社,2008:47-63.
[14] J P Gordon and L F Mollenauer. Phase noise in photonics communications systems using linear amplifier[J].Opt.Lett,1990, 15:1351-1355.
[15] H Kim and P J Winzer.Robustness to laser frequency offset in direct-detection DPSK and DQPSK system[J].Lightwave Technol, 2003, 21:1887-1891.
[16]齐鸣. DPSK信号解调及传输特性的研究[D].湖北:华中科技大学,2007.
[17]金星.高速率相干光通信调制与发射技术的研究[D].吉林:长春理工大学,2010.
[18] Yoav Yadin, Moshe Nazarathy. Multichip differential phase-shift-keyed transmission over (non)linear optical channels[J]. Journal Of Lightwave Techology,2007,25(6):1431-1440.
[19] A H Gnauck, P J Winzer, Optical phase-shift-keyed transmission[J]. Lightwave Technol,2005, 23(1):115-130.
[20] C A Brackett.Dense wavelength division multiplexing networks:Principles and applications[J]. IEEE J.Sel.Areas Commun,1990,8(6):948-964.
[21] D Lever,A Arie.Tunable chromatic dispersion compensator[J].Electrical and Electronics Engineers in Israel,2004,(02):244-246.
[22]苏翼凯,冷鹿峰.高速光纤传输系统[M].上海:上海交通大学出版社,2009:38-62.
[23] M F C Stephens,R V Penty.All-optical regeneration and wavelength conversion in an integrated semiconductor optical amplifier/distributed-feedback laser[J].IEEE Photonics Technology Letters,1999,11(8):979-981.
[24] Yuttaka Miyaamoto, Tomoyoshi Kataoka, Kazushige Yonenaga.WDM field trials of 43Gb/s/channel transport system for optical transport network[J].Journal of lightwave Technology,2002,12(20):2115-2128,
[25]宋永东,张建华.基于MATLAB的2DPSK低频感应通信系统仿真设计[J].通信技术.2009,42(9):26-28.
[26] C A Brecket.Dense wavelength division multiplexing networks:principlesand applications[J]. IEEE Journal on Selected Areas in Communications, 1990, 8: 948-963.
[27]王欣.高速光纤通信系统调制格式的研究[D].湖北:华中科技大学,2007.
[28] D Chang, G C Yang,and W C Kwong. Determination of FWM products unequal spaced channel WDM lightwave systems[J].Journal of Lightwave Technology, 2000,18 (12): 2113-2122.
[29] K Innoue. Four-wave mixing in an optical fiber in the zero-dispersion wavelength region[J]. Journal of Lightwave Technology, 1992, 10(11):1553-1561.
[30] H Suzaki, N Ohteru, and N Takachio. 10 Gb/s WDM transmissions based on extended method of unequally spaced channel allocation around the zero-dispersion wavelength region[J]. IEEE Photonics Technology Letters, 1999,11(12): 1677-1679.
[31] A R Chraplyvi. Limitations on lightwave communications imposed by optical fiber nonlinearities[J]. Journal of Lightwave Technology, 1990, 8: 1548-1557.
[32]雷波. WDM超长距离传输系统中新型光调制格式的研究[D].北京:北京邮电大学,2006.
[33]武晓霞.基于DPSK的新型调制格式在高速光纤传输系统中的应用[D].北京:北京邮电大学,2006.
[34] K Yonenaga, S Aisawa, N Takachio and K Twashita. Reduction of four-wave mixing induced penalty in unequally spaced WDM transmission system by using optical DPSK[J]. Electronic Letters.1996,32(11):2118-2119.
[35]刘竹. DPSK和DQPSK光纤通信系统的研究和比较[D].四川:电子科技大学,2009.
[36]周振,徐铭,蒲骁.基于光纤中四波混频DPSK系统相位噪声提取检测和抑制[J].量子电子学报,2011,28(1):115-121.
[37] Xing Wei, Xiang Liu, and Chris Xu. Numerical simulation of the SPM penalty in a 10Gb/s RZ-DPSK system[J]. IEEE Photonics Technology Letters,2003,15(11):1636-1638.
[38] Yoav Yadin, Alberto Bilenca, and Moshe Nazarathy. Soft detection of multichip DPSK over the nonlinear fiber-optic channel[J]. IEEE Photonics Technology Letters,2005,17(9):2001-2002.
[39] Hidenori Taga, Seng Sheng Shu, Jyun Yi Wu, and Wei-Tong Shih. A theoretical study of the effect of the sispersion map upon a long-haul RZ-DPSK transmission system[J]. IEEE Photonics Technology Letters,2007,19(12):2060-2062.
[40] Hsin Min Wang and Hidenori Taga. An experimental study of XPM and SPM upon a long-haul RZ-DSPK transmission system with a block-type dispersion map[J]. Journal of Lightwave Technology,2010,28(22):3220-3225.