High-speed pulse train amplification in semiconductor optical amplifiers with optimized bias current

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Xia, Mingjun ; Ghafouri-Shiraz, H. ; Hou, Lianping ; Kelly, Anthony E. (2017)
  • Publisher: Optical Society of America
  • Related identifiers: doi: 10.1364/AO.56.001079
  • Subject:
    mesheuropmc: behavioral disciplines and activities

In this paper, we have experimentally investigated the optimized bias current of semiconductor optical amplifiers (SOAs) to achieve high-speed input pulse train amplification with high gain and low distortion. Variations of the amplified output pulse duration with the amplifier bias currents have been analyzed and, compared to the input pulse duration, the amplified output pulse duration is broadened. As the SOA bias current decreases from the high level (larger than the saturated bias current) to the low level, the broadened pulse duration of the amplified output pulse initially decreases slowly and then rapidly. Based on the analysis, an optimized bias current of SOA for high-speed pulse train amplification is introduced. The relation between the SOA optimized bias current and the parameters of the input pulse train (pulse duration, power, and repetition rate) are experimentally studied. It is found that the larger the input pulse duration, the lower the input pulse power or a higher repetition rate can lead to a larger SOA optimized bias current, which corresponds to a larger optimized SOA gain. The effects of assist light injection and different amplifier temperatures on the SOA optimized bias current are studied and it is found that assist light injection can effectively increase the SOA optimized bias current while SOA has a lower optimized bias current at the temperature 20°C than that at other temperatures.
  • References (23)
    23 references, page 1 of 3

    [1] A.R. Totovic, J.V.Crnjanski, M.M. Krstic, M.L.Masanovic, and D.M. Gvozdic, “A self-consistent numerical method for calculation of steady-state characteristics of traveling-wave and reflective SOAs,” IEEE Journal of Selected Topics in Quantum Electronics, 19, Art. No. 3000411, (2013).

    [2] S. Nakamura, Y. Ueno, and K. Tajima, “Femtosecond switching with semiconductor-optical-amplifier-based Symmetric Mach-Zehndertype all-optical switch,” Applied Physics Letters, 78, 3929-3931 (2001).

    [3] A. Capua, O. Karni, G. Eisenstein, V. Sichkovskyi, V. Ivanov, and J. P. Reithmaier, “Coherent control in a semiconductor optical amplifier operating at room temperature,” Nature Commun., 5, Art. ID 5025 (2014).

    [4] M. Xia and H. Ghafouri-Shiraz, “Analysis of carrier heating effects in quantum well semiconductor optical amplifiers considering holes' non-parabolic density of states,” Optical Quantum Electronics, 47, 1847-1858 (2015).

    [5] S. Chandrasekhar, Xiang. Liu, Peter. J. Winzer, J. E. Simsarian, and R. A. Griffin, “Compact all-InP laser-vector-modulator for generation and transmission of 100-Gb/s PDM-QPSK and 200-Gb/s PDM-16- QAM,” IEEE J. Lightw. Technol., 32, 736-742 (2014).

    [6] M. Xia and H. Ghafouri-Shiraz, “Wavelength-dependent femtosecond pulse amplification in wide band tapered-waveguide quantum well semiconductor optical amplifiers,” Applied Optics, 54, 10524-10531 (2015).

    [7] J. Akbar, O. A. Odedina, C. Michie, I. Andonovic and A. E. Kelly, “Monolithic adjustable gain-clamped semiconductor optical amplifier”, IEEE J. Lightwave Technol., 31, 2723-2727 (2013).

    [8] H. Wang, J. Wu, and J.T. Lin, “Spectral characteristics of optical pulse amplification in SOA under assist light injection”, J. Lightwave Technol. 23, 2761-2771 (2005).

    [9] A. V. Uskov, J. Mørk, B. Tromborg, T. W. Berg, I. Magnusdottir, and E. P. O'Reilly, “On high-speed cross-gain modulation without pattern effects in quantum dot semiconductor optical amplifiers,” Opt. Commun.,227, 363-369 (2003).

    [10] V. V. Lysak, H. Kawaguchi, I. A. Sukhoivanov, T. Katayama, and A. V. Shulika, “Ultrafast gain dynamics in asymmetrical multiple quantumwell semiconductor optical amplifiers,” IEEE J. Quantum Electron., 41, 797-807(2005).

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