Gain and noise ripple reduction in broadband Raman amplifiers using HNLF spectral broadening

V. Kalavally, R. Karuntu, T. Win, M. Premaratne

    Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

    Abstract

    The effects of using spectrally broadened pumps on the gain and noise ripple in broadband Raman amplifiers are investigated. Pump spectral broadening, achieved by initiating modulation instability in a highly nonlinear fiber (HNLF) using a continuous-wave input is shown to reduce the number of pumps required in addition to improving the flatness of the gain and noise profile. Optimal broadening of a pump spectrum in the E-and S-bands is achieved as a result of optimisation of the second order disperion and nonlinear coefficients of the HNLF. For a specific example of a 51-channel, C-band wavelength-division- multiplexed network employing a 50-km transmission fiber span, it is shown using simulation that spectrally broadened pumps improve the gain and noise ripple by 2 dB and 0.2 dB respectively. It is also shown that the number of pumps can be reduced by half when such a pumping scheme is used.

    Original languageEnglish
    Title of host publicationICCAIE 2010 - 2010 International Conference on Computer Applications and Industrial Electronics
    Pages49-53
    Number of pages5
    DOIs
    Publication statusPublished - 2010
    EventInternational Conference on Computer Applications and Industrial Electronics, ICCAIE 2010 - Kuala Lumpur, Malaysia
    Duration: 5 Dec 20107 Dec 2010

    Conference

    ConferenceInternational Conference on Computer Applications and Industrial Electronics, ICCAIE 2010
    CountryMalaysia
    CityKuala Lumpur
    Period5/12/107/12/10

    Keywords

    • Gain ripple
    • HNLF
    • Modulation instability
    • Noise ripple
    • Nonlinear spectral broadening
    • Raman amplifier

    Cite this

    Kalavally, V., Karuntu, R., Win, T., & Premaratne, M. (2010). Gain and noise ripple reduction in broadband Raman amplifiers using HNLF spectral broadening. In ICCAIE 2010 - 2010 International Conference on Computer Applications and Industrial Electronics (pp. 49-53). [5735045] https://doi.org/10.1109/ICCAIE.2010.5735045
    Kalavally, V. ; Karuntu, R. ; Win, T. ; Premaratne, M. / Gain and noise ripple reduction in broadband Raman amplifiers using HNLF spectral broadening. ICCAIE 2010 - 2010 International Conference on Computer Applications and Industrial Electronics. 2010. pp. 49-53
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    keywords = "Gain ripple, HNLF, Modulation instability, Noise ripple, Nonlinear spectral broadening, Raman amplifier",
    author = "V. Kalavally and R. Karuntu and T. Win and M. Premaratne",
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    Kalavally, V, Karuntu, R, Win, T & Premaratne, M 2010, Gain and noise ripple reduction in broadband Raman amplifiers using HNLF spectral broadening. in ICCAIE 2010 - 2010 International Conference on Computer Applications and Industrial Electronics., 5735045, pp. 49-53, International Conference on Computer Applications and Industrial Electronics, ICCAIE 2010, Kuala Lumpur, Malaysia, 5/12/10. https://doi.org/10.1109/ICCAIE.2010.5735045

    Gain and noise ripple reduction in broadband Raman amplifiers using HNLF spectral broadening. / Kalavally, V.; Karuntu, R.; Win, T.; Premaratne, M.

    ICCAIE 2010 - 2010 International Conference on Computer Applications and Industrial Electronics. 2010. p. 49-53 5735045.

    Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

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    N2 - The effects of using spectrally broadened pumps on the gain and noise ripple in broadband Raman amplifiers are investigated. Pump spectral broadening, achieved by initiating modulation instability in a highly nonlinear fiber (HNLF) using a continuous-wave input is shown to reduce the number of pumps required in addition to improving the flatness of the gain and noise profile. Optimal broadening of a pump spectrum in the E-and S-bands is achieved as a result of optimisation of the second order disperion and nonlinear coefficients of the HNLF. For a specific example of a 51-channel, C-band wavelength-division- multiplexed network employing a 50-km transmission fiber span, it is shown using simulation that spectrally broadened pumps improve the gain and noise ripple by 2 dB and 0.2 dB respectively. It is also shown that the number of pumps can be reduced by half when such a pumping scheme is used.

    AB - The effects of using spectrally broadened pumps on the gain and noise ripple in broadband Raman amplifiers are investigated. Pump spectral broadening, achieved by initiating modulation instability in a highly nonlinear fiber (HNLF) using a continuous-wave input is shown to reduce the number of pumps required in addition to improving the flatness of the gain and noise profile. Optimal broadening of a pump spectrum in the E-and S-bands is achieved as a result of optimisation of the second order disperion and nonlinear coefficients of the HNLF. For a specific example of a 51-channel, C-band wavelength-division- multiplexed network employing a 50-km transmission fiber span, it is shown using simulation that spectrally broadened pumps improve the gain and noise ripple by 2 dB and 0.2 dB respectively. It is also shown that the number of pumps can be reduced by half when such a pumping scheme is used.

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    Kalavally V, Karuntu R, Win T, Premaratne M. Gain and noise ripple reduction in broadband Raman amplifiers using HNLF spectral broadening. In ICCAIE 2010 - 2010 International Conference on Computer Applications and Industrial Electronics. 2010. p. 49-53. 5735045 https://doi.org/10.1109/ICCAIE.2010.5735045