All-optical UWB impulse generation based on cross-phase modulation and frequency discrimination

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© The Institution of Engineering and Technology
Published 28/07/2012

Abstract

All-optical ultra-wideband (UWB) impulse generation based on optical cross-phase modulation (XPM) and frequency discrimination is proposed and experimentally demonstrated. In the proposed configuration, an optical pulse train from a femtosecond pulse laser that is spectrum sliced to get the required pulse width is used as a pump, which is then injected into a nonlinear fibre together with a continuous-wave (CW) probe to create XPM. A fibre Bragg grating (FBG) is used as a frequency discriminator. By locating the cross-phase-modulated probe at the linear or the quadrature slopes of the FBG reflection spectrum, UWB monocycle or doublet pulses are generated.

Inspec keywords: discriminators; optical modulation; ultra wideband communication; optical pumping; radio-over-fibre; Bragg gratings; optical fibres; optical pulse generation; phase modulation

Other keywords: spectrum slice; nonlinear fibre; fibre Bragg grating; frequency discrimination; doublet pulses; cross-phase modulation; femtosecond pulse laser; optical ultrawideband impulse generation; ultrawideband monocycle

Subjects: Microwave photonics; Fibre optics and fibre waveguides; Optical communication; Laser beam modulation, pulsing and switching; mode locking and tuning

References

    1. 1)
    2. 2)
      • Kawanishi, T., Sakamoto, T., Izutsu, M.: `Ultra-wide-band signal generation using high-speed optical frequency-shift-keying technique', IEEE Int. Topical Meeting on Microwave Photonics–Technical Digest, MWP'04, 2004
    3. 3)
    4. 4)
    5. 5)
      • Zeng, F., Qing, Wang, Yao, J.P.: `All-optical UWB pulse generation based on XPM and FBG-based frequency discriminator', Asia-Pacific Microwave Photonics Conf. (post-deadline), April 2006, Kobe, Japan
    6. 6)
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