[1] Alan E. Willner, Omer Faruk Yilmaz, Jian Wang et al.. Optically efficient nonlinear signal processing［J］. IEEE J. Sel. Topics Quant., 2011, 17(2): 320～332
[2] Hsu-Feng Chou. High-speed OTDM and WDM networks using traveling-wave electroabsorption modulators［J］. IEEE J. Sel. Topics Quan., 2007, 13(1): 58～69
[3] Yu. Yu, X. Zhang, D. Huang. All-optical RZ-to-NRZ format conversion with a tunable fibre based delay interferometer［J］. Chin. Phys. Lett., 2006, 24(3): 706～709
[4] Yikai Su, Fangfei Liu, Qiang Li et al.. Signal processing in silicon waveguides［C］. IEEE, Communications and Photonics Conference and Exhibition (ACP), 2009. 1～2
[5] Qianfan Xu, Michal Lipson. All-optical logic based on silicon micro-ring resonators［J］. Opt. Express, 2007, 15(3): 924～929
[6] A. C. Tuner, M. A. Foster, A. L. Gaeta et al.. Ultra-low power parametric frequency conversion in a silicon microring resonator［J］. Opt. Express, 2008, 16(7): 488～4887
[7] Yu Zhang, Enming Xu, Dexiu Huang. All-optical format conversion from RZ to NRZ utilizing microfiber resonator［J］. IEEE Photon. Technol. Lett., 2009, 21(17): 1202～1204
[8] F. Xia, L. Sekaric, Y. Vlasov. Ultracompact optical buffers on a silicon chip［J］. Nat. Photonics, 2007, 1(1): 65～71
[9] Q. Xu, S. Manipatruni, B. Schmidt et al.. 12.5 Gbit/s carrier-injection-based silicon micro-ring silicon modulators［J］. Opt. Express, 2007, 15(2): 430～436
[10] Linjie Zhou, Hui Chen. On-chip NRZ-to-PRZ format conversion using narrow-band Silicon microring resonator-based notch filters［J］. IEEE J. Lightwave Technol., 2008, 26(13): 1950～1955
[11] W. Astar, Jeffrey B. Driscoll, Xiaoping Liu. All-optical format conversion of NRZ-OOK to RZ-OOK in a silicon nanowire utilizing either XPM or FWM and resulting in a receiver sensitivity gain of ～2.5 dB［J］. IEEE J. Sel. Topics Quant., 2010, 16(1): 234～249
[12] Takashi Matsui, Kazuhide Nakajima, C. Fukai. Applicability of photonic crystal fiber with uniform air-hole structure to high-speed and wide-band transmission over conventional telecommunication bands［J］. IEEE J. Lightwave Technol., 2009, 27(23): 5410～5416
[13] C. H. Kwok, S. H. Lee, K. K. Chow et al.. Photonic crystal fiber based all-optical modulation format conversions between NRZ and RZ with hybrid clock recovery from a PRZ signal［J］. IET Optoelectron., 2007, 1(1): 47～53
[14] Gordon K. P. Lei, Chester Shu. 4 × 10 Gb/s time and wavelength multicasting with NRZ to RZ format conversion using four-wave mixing in a highly nonlinear photonic crystal fiber［C］. OSA / OFC/NFOEC 2010. JWA49
[15] J. A. Armstrong, N. Broembergen, J. Dcuing et al.. Interactions between light waves in a nonlinear dielectric［J］. Phys. Rew., 1962, 127(6): 1918～1939
[16] J. E. McGeehan. All-optical digital 3-input AND gate using sum- and difference-frequency generation in a PPLN waveguide［J］. Electron. Lett., 2007, 43(7): 409～410
[17] J. Wang, J. Q. Sun, Q. Z. Sun. Single-PPLN-based simultaneous half-adder, half-subtracter, and OR logic gate: proposal and simulation［J］. Opt. Express, 2007, 15(4):1690～1699
[18] H. Furukawa, A. Nirmalathas, N. Wada. Tunable all-optical wavelength conversion of 160 Gb/s RZ optical signals by cascaded SFG-DFG generation in PPLN waveguide［J］. IEEE Photon. Technol. Lett., 2007, 19(6): 384～386
[19] S. L. Jansen, D. van den Borne, P. M. Krummrich et al.. Long-haul DWDM transmission systes employing optical phase conjugation［J］. IEEE J. Sel. Topics Quant., 2006, 12(4): 505～520
[20] Jian Wang, Junqiang Sun, Xinliang Zhang et al.. Proposal for PPLN-based all-optical NRZ-to-CSRZ,RZ-to-CSRZ, NRZ-DPSK-to-CSRZ-DPSK, and RZ-DPSK-to-CSRZ-DPSK format conversions［J］. IEEE Photon. Technol. Lett., 2008, 20(12): 1039～1041
[21] J. Wang, J. Q. Sun, Q. Z. Sun et al.. Experimental observation of all-optical non-return-to-zero-to-return-to-zero format conversion based on cascaded second-order nonlinearity assisted by active mode-locking［J］. Opt. Lett., 2007, 32(16): 2462～2464
[22] Y. Liu. Error-free 320 Gb/s all-optical wavelength conversion using a single semiconductor optical amplifier［J］. IEEE J. Lightwave Techol., 2007, 25(1): 103～108
[23] X. Xie, J. Zhang, W. Zhao et al.. Analysis of polarization dependence for OTDM demultiplexers based on four-wavelength mixing in semiconductor optical amplifier［J］. Opt. Commun., 2008, 281: 958～964
[24] Jianji Dong, Xinliang Zhang, Songnian Fu et al.. Ultrafast all-optical signal processing based on single semiconductor optical amplifier and optical filtering［J］. IEEE J. Sel. Topics Quant., 2008, 14(3): 770～778
[25] Jianji Dong, Songnian Fu, Xinliang Zhang et al.. Single SOA based all-optical adder assisted by optical bandpass filter: Theoretical analysis and performance optimization［J］. Opt. Commun., 2007, 270(2): 238～246
[26] B. Mikkelsen, M. Vaa, H. N. Poulsen et al.. 40 Gbit/s all-optical wavelength converter and RZ-to-NRZ format adapter realised by monolithic integrated active Michelson interferometer［J］. Electron. Lett., 1997, 33(2): 133～134
[27] Luca Banchi, Marco Presi, Antonio D′Errico et al.. All-optical 10 and 40 Gbit/s RZ-to-NRZ format and wavelength conversion using semiconductor optical amplifiers［J］. IEEE J. Lightwave Technol., 2010, 28(1): 32～38
[28] Jianji Dong, Xinliang Zhang, Jing Xu. 40 Gb/s all-optical NRZ to RZ format conversion using single SOA assisted by optical bandpass filter［J］. Opt. Express, 2007, 15(6): 2907～2914
[29] X. Yang, A. K. Mishra, R. J. Manning. All-optical 40 Gbit/s NRZ to RZ format conversion by nonlinear polarization rotation in SOAs［J］. Electron. Lett., 2007, 43(8): 469～471
[30] Andrea Reale. Format conversion of optical data using four-wave mixing in semiconductor optical amplifiers［J］. IEEE J. Sel. Topics Quan., 2001, 7(4): 703～709
[31] J. Dong, X. Zhang, F. Wang et al.. Single-to-dual channel NRZ-to-RZ format conversion by four-wave mixing in single semiconductor optical amplifier［J］. Electron. Lett., 2008, 44(12): 763～764
[32] C. H. Kwok, Chinlon Lin. Polarization-insensitive all-optical NRZ-to-RZ format conversion by spectral filtering of a cross phase modulation broadened signal spectrum［J］. IEEE J. Sel. Topics Quan., 2006, 12(3): 451～458
[33] Bill Ping-Piu Kuo, P. C. Chui, Kenneth Kin-Yip Wong. All-optical tunable delay with NRZ-to-RZ format conversion capability based on optical kerr switch and pulse pre-chirping［J］. IEEE J. Lightwave Technol., 2008, 26(23): 3770～3775
[34] C. Yu, L. -S. Yan, T. Luo. Width-tunable optical RZ pulse train generation based on four-wave mixing in highly nonlinear fiber［J］. IEEE Photon. Technol. Lett., 2005, 17(3): 636～638
[35] C. W. Chow, C. S. Wong. All-optical data-format and wavelength conversion in two-wavelength injection locked slave Fabry-Perot laser diodes［J］. Electron. Lett., 2003, 39(13): 997～999
[36] C. H. Kwok, Chinlon Lin. Simultaneous 4 10 Gb/s NRZ-to-RZ modulation format conversion in nonlinear optical loop mirror with a photonic crystal fiber［J］. IEEE Photon. Technol. Lett., 2007, 19(22): 1825～1827
[37] Jianjun Yu, Gee Kung Chang. 40 Gbit/s signal format conversion from NRZ to RZ using a Mach-Zehnder delay interferometer［J］. Opt. Commun., 2005, 248(4-6): 419～422
[38] Yu Yu, Xinliang Zhang, Jose B. Rosas-Fernández et al.. Simultaneous multiple DWDM channel NRZ-to-RZ regenerative format conversion at 10 and 20 Gb/s［J］. Opt. Express, 2009, 17(5): 3964～3969
