[1] [1] Khaleghi H, Sharaiha A, Rampone T, et al.. Semiconductor optical amplifiers in coherent optical-OFDM systems[J]. IEEE Photonics Technology Letters, 2012, 24(7): 560-562.

[2] [2] Krzczanowicz L, Connelly M. 40 Gb/s NRZ-DQPSK data all-optical wavelength conversion using four wave mixing in SOA[C]. Irish Signals & Systems Conference 2014 and 2014 China-Ireland International Conference on Information and Communications Technologies, 2013: 349-351.

[3] [3] Wang D W, Cheng T H, Yeo Y K, et al.. Performance comparison of using SOA and HNLF as FWM medium in a wavelength multicasting scheme with reduced polarization sensitivity[J]. Journal of Lightwave Technology, 2010, 28(24): 3497-3505.

[4] [4] Filion B, Amiralizadeh S, Nguyen A T, et al.. Wideband wavelength conversion of 16 Gbaud 16-QAM signals in a semiconductor optical amplifier[C]. Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC), 2013: 19825-19833.

[5] [5] Spyropoulou M, Pleros N, Vyrsokinos K, et al.. 40 Gb/s NRZ wavelength conversion using a differentially-biased SOA-MZI: Theory and experiment[J]. Journal of Lightwave Technology, 2011, 29(10): 1489-1499.

[6] [6] Lu G W, Sakamoto T, Kawanishi T. Coherently-pumped FWM in HNLF for 16QAM wavelength conversion free of phase noise from pumps[C]. 2014 The European Conference on Optical Communication, 2014: 1-3.

[7] [7] Fok M P, Shu C. Tunable optical delay using four-wave mixing in a 35-cm highly nonlinear bismuth-oxide fiber and group velocity dispersion[J]. Journal of Lightwave Technology, 2008, 26(5): 499-504.

[8] [8] Huang Xinning, Xie Xiaoping, Zhao Wei, et al.. A high-efficiency tunable polarization-insensitive wavelength convertor based on degenerate four-wave mixing in a highly nonlinear photonic crystal fiber[J]. Chinese J Lasers, 2014, 41(5): 0505005.

[9] [9] Lu J, Chen L, Dong Z, et al.. Polarization insensitive wavelength conversion based on orthogonal pump four-wave mixing for polarization multiplexing signal in high-nonlinear fiber[J]. Journal of Lightwave Technology, 2009, 27(24): 5767-5774.

[10] [10] Cao Zizheng, Dong Ze, Lu Jia, et al.. All-optical orthogonal pump wavelength conversion of optical OFDM signal[J]. Journal of Optoelectronics·Laser, 2009, 20(5): 623-627.

[11] [11] Lu J, Yu J, Zhou H, et al.. Polarization insensitive wavelength conversion based on dual pump four wave mixing for polarization multiplexing signal in SOA[J]. Optics Communications, 2011, 284(22): 5364-5371.

[12] [12] Zhou H, He J, Cao Z Z, et al.. All-optical wavelength conversion scheme to reduce the crosstalk among the two multiplexed channels for polarization multiplexing system[J]. Optical Fiber Technology, 2013, 19(6): 549-555.

[13] [13] Zhou H, He J, Dong Z, et al.. Theoretical and experimental study on wavelength conversion based on FWM for PDM-QPSK signals with digital coherent detection in HNLF[J]. Optics Communications, 2014, 316: 161-167.

[14] [14] Schmidt B J C, Lowery A J, Armstrong J. Experimental demonstrations of electronic dispersion compensation for long-haul transmission using direct-detection optical OFDM[J]. Journal of Lightwave Technology, 2008, 26(1): 196-203.

[15] [15] Alves T M F, Cartaxo A V T. Analytical characterization of four wave mixing effect in direct-detection double-sideband OFDM optical transmission systems[J]. Optics Express, 2014, 22(7): 8598-8616.

[16] [16] Chen Y X, Li J H, Zhu P K, et al.. Experimental demonstration of 400 Gb/s optical PDM-OFDM superchannel multicasting by multiple-pump FWM in HNLF[J]. Optics Express, 2013, 21(8): 9915-9922.

[17] [17] Lu Jia, Hu Yuanyuan, Liu Jianfei, et al.. All-optical wavelength conversion based on parallel dual-pump for polarization multiplexing OFDM signal in SOA[J]. Chinese J Lasers, 2015, 42(2): 0205001.

[18] [18] Yi X, Shieh W, Ma Y. Phase noise effects on high spectral efficiency coherent optical OFDM transmission[J]. Journal of Lightwave Technology, 2008, 26(10): 1309-1316.

[19] [19] Wyatt R, Devlin W J. 10 kHz linewidth 1.5 μm InGaAsP external cavity laser with 55 nm tuning range[J]. Electronics Letters, 1983, 19(3): 110-112.

[20] [20] Brid D M, Armitage J R, Kashyap R, et al.. Narrow line semiconductor laser using fibre grating[J]. Electronics Letters, 1991, 27(13): 1115-1116.

[21] [21] Li Xiaofeng, Pan Wei, Ma Dong, et al.. Effect of spontaneous emission noise on chaotic optical communication system[J]. Acta Physica Sinica, 2006, 55(10): 5094-5104.

[22] [22] Henry C H. Theory of the linewidth of semiconductor lasers[J]. IEEE Journal of Quantum Electronics, 1982, 18(2): 259-264.

[23] [23] Kojima K, Kyuma K, Nakayama T. Analysis of the spectral linewidth of distributed feedback laser diodes[J]. Journal of Lightwave Technology, 1985, 3(5): 1048-1055.

[24] [24] Khaleghi H, Morel P, Sharaiha A, et al.. Experimental validation of numerical simulations and performance analysis of a coherent optical-OFDM transmission system employing a semiconductor optical amplifier[J]. Journal of Lightwave Technology, 2013, 31(1): 161-170.

[25] [25] Morel P, Sharaiha A. Wideband time-domain transfer matrix model equivalent circuit for short pulse propagation in semiconductor optical amplifiers[J]. IEEE Journal of Quantum Electronics, 2009, 45(2): 103-116.

[26] [26] Lu Zhenlong, Wang Junhua, Sun Yanzan, et al.. Inter-carrier interference suppression algorithm for OFDM-PON system based on pseudo-symmetrical training sequence[J]. Acta Optica Sinica, 2013, 33(10): 1006002.

[27] [27] Zeng Xiangye, Liu Jianfei, Wang Jingyi, et al.. An improved ISFA channel estimation algorithm[J]. Journal of Optoelectronics·Laser, 2014, 25(8): 1481-1486.

[28] [28] Gu Xin, Lu Jin, Ren Hongliang, et al.. Channel equalization using independent component analysis with adaptive variable step in PDM-CO-OFDM[J]. Acta Optica Sinica, 2015, 35(10): 1006003.