All-optical clock recovery from 40 Gbit/s NRZ signal based on clock line enhancement and sharp periodic filtering

Contestabile, G.; Presi, M.; Calabretta, N.; Ciaramella, E.
October 2004
Electronics Letters;10/14/2004, Vol. 40 Issue 21, p1361
Academic Journal
40 GHz clock extraction from a common 40 Gbit/s NRZ signal is experimentally demonstrated. First, a nonlinear optical preprocessor is exploited and then a semiconductor-assisted Fabry-Peròt filter is used for clock extraction. The good performance and stability of the recovered 40 GHz clock signal is confirmed when it is used in a 40 Gbit/s back-to-back bit error ratio measurement.


Related Articles

  • Demonstration of transverse-magnetic dominant gain in quantum dot semiconductor optical amplifiers. Yasuoka, Nami; Kawaguchi, Kenichi; Ebe, Hiroji; Akiyama, Tomoyuki; Ekawa, Mitsuru; Tanaka, Shinsuke; Morito, Ken; Uetake, Ayahito; Sugawara, Mitsuru; Arakawa, Yasuhiko // Applied Physics Letters;3/10/2008, Vol. 92 Issue 10, p101108 

    We demonstrated transverse-magnetic (TM)-mode dominated gain at the 1.5 μm wavelength in semiconductor optical amplifiers (SOAs) with columnar quantum dots (QDs). We show that we can control the polarization dependence of optical gain in QD-SOAs by changing the height and tensile-strained...

  • Graded photonic crystal terahertz quantum cascade lasers. Chassagneux, Y.; Colombelli, R.; Maineult, W.; Barbieri, S.; Khanna, S. P.; Linfield, E. H.; Davies, A. G. // Applied Physics Letters;1/18/2010, Vol. 96 Issue 3, p031104 

    The use of integrated photonic structures to tailor the behavior of light is extremely promising for optimizing performance and for introducing advanced functionalities into optoelectronic devices. We demonstrate a powerful method based on photonic-band engineering which allows the optimization...

  • Analysis of high bit rate operation of a vertically gain-clamped semiconductor laser amplifier. Song, X.; Avrutin, E. A. // IET Optoelectronics;Feb2008, Vol. 2 Issue 1, p34 

    A detailed theoretical model of the high bit rate operation of a vertically gain-clamped semiconductor optical amplifier with high bit rate return-to-zero and non-return-to-zero input signals is presented. It is shown that good eye opening at 10–40 GBit/s can be achieved at sufficiently...

  • Near-field optics yield nanoscale motion sensor. Jones-Bey, Hassaun A. // Laser Focus World;Dec2004, Vol. 40 Issue 12, p23 

    This article reports on a study related to optical nanoelectromechanical systemsubwavelength, conducted by researcher Dustin Carr. A subwavelength grating and variable reflector proposed by researchers at Sandia National Laboratories last year that has been fabricated and demonstrated as a...

  • Two-state competition in 1.3 μm multilayer InAs/InGaAs quantum dot lasers. Cao, Q.; Yoon, S. F.; Tong, C. Z.; Ngo, C. Y.; Liu, C. Y.; Wang, R.; Zhao, H. X. // Applied Physics Letters;11/9/2009, Vol. 95 Issue 19, p191101 

    The competition of ground state (GS) and excited state (ES) is investigated from the as-grown and thermally annealed 1.3 μm ten-layer p-doped InAs/GaAs quantum dot (QD) lasers. The modal gain competition between GS and ES are measured and analyzed around the ES threshold characteristics. Our...

  • Reversible mode switching in Y-coupled terahertz lasers. Marshall, Owen P.; Chakraborty, Subhasish; Khairuzzaman, Md; Beere, Harvey E.; Ritchie, David A. // Applied Physics Letters;3/18/2013, Vol. 102 Issue 11, p111105 

    Electrically independent terahertz (THz) quantum cascade lasers (QCLs) are optically coupled in a Y configuration. Dual frequency, electronically switchable emission is achieved in one QCL using an aperiodic grating, designed using computer-generated hologram techniques, and incorporated...

  • Ultrafast gain and refractive index dynamics in GaInNAsSb semiconductor optical amplifiers. Piwonski, T.; Pulka, J.; Madden, G.; Huyet, G.; Houlihan, J.; Pozo, J.; Vogiatzis, N.; Ivanov, P.; Rorison, J. M.; Barrios, P. J.; Gupta, J. A. // Journal of Applied Physics;Oct2009, Vol. 106 Issue 8, p083104 

    The gain and refractive index dynamics of dilute nitride antimonide semiconductor optical amplifiers are studied using heterodyne pump probe spectroscopy, both in forward and reverse bias regimes. In the forward biased absorption regime, both gain and refractive index relax on the same timescale...

  • Optical bistability and nonlinear gain in 1.55 µm VCSOA. Hurtado, A.; Gonzalez-Marcos, A.; Henning, I.D.; Adams, M.J. // Electronics Letters;4/13/2006, Vol. 42 Issue 8, p483 

    An experimental observation of power and wavelength optical bistability and nonlinear gain in a 1550 nm vertical-cavity semiconductor optical amplifier (VCSOA) operated in reflection and biased above and below threshold is reported. Two distinct types of optical bistability, clockwise and...

  • Design of a phase-shifted long-period grating using the partial-etching technique. Chung, Kun-Wook; Yin, Shizhuo // Microwave & Optical Technology Letters;4/5/2005, Vol. 45 Issue 1, p18 

    In this paper, a newly designed reconfigurable phase-shifted long period grating using the partial etching technique is presented. In the locally etched long-period grating, there are discontinuities in the effective refractive index of the cladding modes. The phase shift in the long-period...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics