GHz pulse source for 640 Gbit / s OTDM based on phase modulator and self - phase modulation

We demonstrate a high-quality cavity-free 10 GHz 680 fs pulse source starting from a continuous wave (CW) laser. The pulse source is employed in a 640 Gbit/s on-off keying (OOK) OTDM data generation and demultiplexing experiment, where the error-free bit error rate (BER) performance confirms the high pulse quality. The pulse source is based on a linear pulse compression stage followed by two polarization-independent non-linear pulse compression stages. The linear pulse compression stage relies on a phase modulator, which is used to generate linear chirp and followed by a dispersive element to compensate the chirp. The non-linear pulse compression stages are based on self-phase modulation (SPM) in dispersion-flattened highly non-linear fibers (DF-HNLF). The pulse source is tunable over the C-band with negligible pedestal. ©2011 Optical Society of America OCIS codes: (060.2330) Fiber optics communications; (060.4510) Optical communications; (060.4370) Nonlinear optics, fibers. References and links 1. H. Hu, M. Galili, L. K. Oxenløwe, J. Xu, H. C. H. Mulvad, C. Peucheret, A. T. Clausen, and P. Jeppesen, “Errorfree transmission of serial 1.28 Tbaud RZ-DPSK signal,” in 2010 36th European Conference and Exhibition on Optical Communication (ECOC) (2010), paper 4.18. 2. H. C. Hansen Mulvad, M. Galili, L. K. Oxenløwe, H. Hu, A. T. Clausen, J. B. Jensen, C. Peucheret, and P. Jeppesen, “Demonstration of 5.1 Tbit/s data capacity on a single-wavelength channel,” Opt. Express 18(2), 1438–1443 (2010). 3. T. Richter, E. Palushani, C. Schmidt-Langhorst, M. Nölle, R. Ludwig, J. K. Fischer, and C. Schubert, “Single wavelength channel 10.2 Tb/s TDM-data capacity using 16-QAM and coherent detection” in Optical Fiber Communication Conference, OSA Technical Digest (CD) (Optical Society of America, 2011), paper PDPA9. 4. E. Yamada, H. Takara, T. Ohara, K. Sato, K. Jinguji, Y. Inoue, T. Shibata, and T. Morioka, “106 channel × 10 Gbit/s, 640 km DWDM transmission with 25 GHz spacing with supercontinuum multi-carrier source,” Electron. Lett. 37(25), 1534–1536 (2001). 5. A. D. Ellis and F. C. G. Gunning, “Spectral density enhancement using coherent WDM,” IEEE Photon. Technol. Lett. 17(2), 504–506 (2005). 6. N. K. Fontaine, R. P. Scott, L. Zhou, F. M. Soares, J. P. Heritage, and S. J. B. Yoo, “Real-time full-field arbitrary optical waveform measurement,” Nat. Photonics 4(4), 248–254 (2010). 7. S. Etemad, P. Toliver, R. Menendez, J. Young, T. Banwell, S. Galli, J. Jackel, P. Delfyett, C. Price, and T. Turpin, “Spectrally efficient optical CDMA using coherent phase-frequency coding,” IEEE Photon. Technol. Lett. 17(4), 929–931 (2005). 8. D. Hillerkuss, R. Schmogrow, T. Schellinger, M. Jordan, M. Winter, G. Huber, T. Vallaitis, R. Bonk, P. Kleinow, F. Frey, M. Roeger, S. Koenig, A. Ludwig, A. Marculescu, J. Li, M. Hoh, M. Dreschmann, J. Meyer, S. Ben Ezra, N. Narkiss, B. Nebendahl, F. Parmigiani, P. Petropoulos, B. Resan, A. Oehler, K. Weingarten, T. Ellermeyer, J. Lutz, M. Moeller, M. Huebner, J. Becker, C. Koos, W. Freude, and J. Leuthold, “26 Tbit s-1 linerate super-channel transmission utilizing all-optical fast Fourier transform processing,” Nat. Photonics 5(6), 364– 371 (2011). 9. T. Kobayashi, H. Yao, K. Amano, Y. Fukushima, A. Morimoto, and T. Sueta, “Optical pulse compression using high-frequency electrooptic phase modulation,” IEEE J. Quantum Electron. 24(2), 382–387 (1988). 10. H. Hu, J. Yu, L. Zhang, A. Zhang, Y. Li, Y. Jiang, and E. Yang, “Pulse source based on directly modulated laser and phase modulator,” Opt. Express 15(14), 8931–8937 (2007). 11. T. Sakamoto, T. Kawanishi, and M. Tsuchiya, “10 GHz, 2.4 ps pulse generation using a single-stage dual-drive Mach-Zehnder modulator,” Opt. Lett. 33(8), 890–892 (2008). #156281 $15.00 USD Received 10 Oct 2011; accepted 19 Oct 2011; published 18 Nov 2011 (C) 2011 OSA 12 December 2011 / Vol. 19, No. 26 / OPTICS EXPRESS B343 12. K. Igarashi, K. Katoh, K. Kikuchi, K. Imai, and M. Kourogi, “Generation of 10-GHz 2-ps optical pulse train over the C band based on an optical comb generator and its application to 160-Gbit/s OTDM systems,” in 34th European Conference on Optical Communication, 2008. ECOC 2008, paper Tu.3.D.1 (2008). 13. A. O. J. Wiberg, B. P.-P. Kuo, C.-S. Bres, N. Alic, and S. Radic, “640-Gb/s Transmitter and self-tracked demultiplexing receiver using single parametric gate,” IEEE Photon. Technol. Lett. 23(8), 507–509 (2011). 14. I. Morohashi, T. Sakamoto, H. Sotobayashi, T. Kawanishi, I. Hosako, and M. Tsuchiya, “Widely repetitiontunable 200 fs pulse source using a Mach-Zehnder-modulator-based flat comb generator and dispersion-flattened dispersion-decreasing fiber,” Opt. Lett. 33(11), 1192–1194 (2008). 15. H. Hu, J. Yu, N. Bai, L. Zhang, A. Zhang, W. Wang, and E. Yang, “10 GHz 1.6 ps optical pulse generation with 84 fs timing jitter,” Electron. Lett. 43, 1222–1223 (2007). 16. A. T. Clausen, H. N. Poulsen, L. K. Oxenløwe, A. I. Siahlo, J. Seoane, and P. Jeppesen, “Pulse source requirements for OTDM systems”, Annual Meeting of the IEEE Lasers & Electro-Optics Society (2003), paper TuY2. 17. P. Mamyshev, “All-optical data regeneration based on self-phase modulation effect”, in Proceedings of 24thEuropean Conference on Optical Communication (ECOC), 1998 (1998), vol. 1, pp. 475–476.