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Cascaded Raman and Intermodal Four-Wave Mixing in Conventional Non-Zero Dispersion-Shifted Fiber for Versatile Ultra-Broadband Continuum Generation

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Authors

  • Partha Mondal
  • Nitin Bhatia
  • Vishwatosh Mishra
  • Raktim Haldar

External Research Organisations

  • Indian Institute of Technology Kharagpur (IITKGP)
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  • Citations
    • Citation Indexes: 11
  • Captures
    • Readers: 14
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Details

Original languageEnglish
Pages (from-to)2351-2357
Number of pages7
JournalJournal of lightwave technology
Volume36
Issue number12
Publication statusPublished - 15 Jun 2018
Externally publishedYes

Abstract

We demonstrate an efficient ultra-broadband supercontinuum generation in telecom-grade optical fiber by pumping Q-switched subnanosecond laser pulses (0.77 ns) at 1064 nm in the normal dispersion region of the fiber. The fiber supports several spatial modes at this pump wavelength. Multiple sidebands with six Raman stokes spanning over more than 1100 nm (starting well below 600 nm and extending beyond 1700 nm) are generated using very low input pump power (average 57 mW). Theoretical analysis shows that cascaded Raman and cascaded intermodal four-wave mixing processes can account for the generation of multiple sidebands. We also demonstrate that the modal composition of the input pump profile can provide an extra degree of freedom in tailoring the multiple Raman peaks in the output spectrum.

Keywords

    Fiber nonlinear optics, multimode nonlinear interaction, Raman scattering, supercontinuum generation

ASJC Scopus subject areas

Cite this

Cascaded Raman and Intermodal Four-Wave Mixing in Conventional Non-Zero Dispersion-Shifted Fiber for Versatile Ultra-Broadband Continuum Generation. / Mondal, Partha; Bhatia, Nitin; Mishra, Vishwatosh et al.
In: Journal of lightwave technology, Vol. 36, No. 12, 15.06.2018, p. 2351-2357.

Research output: Contribution to journalArticleResearchpeer review

Download
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title = "Cascaded Raman and Intermodal Four-Wave Mixing in Conventional Non-Zero Dispersion-Shifted Fiber for Versatile Ultra-Broadband Continuum Generation",
abstract = "We demonstrate an efficient ultra-broadband supercontinuum generation in telecom-grade optical fiber by pumping Q-switched subnanosecond laser pulses (0.77 ns) at 1064 nm in the normal dispersion region of the fiber. The fiber supports several spatial modes at this pump wavelength. Multiple sidebands with six Raman stokes spanning over more than 1100 nm (starting well below 600 nm and extending beyond 1700 nm) are generated using very low input pump power (average 57 mW). Theoretical analysis shows that cascaded Raman and cascaded intermodal four-wave mixing processes can account for the generation of multiple sidebands. We also demonstrate that the modal composition of the input pump profile can provide an extra degree of freedom in tailoring the multiple Raman peaks in the output spectrum.",
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author = "Partha Mondal and Nitin Bhatia and Vishwatosh Mishra and Raktim Haldar and Varshney, {Shailendra K.}",
note = "Funding Information: Manuscript received October 22, 2017; revised January 14, 2018 and February 18, 2018; accepted February 19, 2018. Date of publication February 27, 2018; date of current version March 27, 2018. The work of S. K. Varshney was supported by the project DST-RFBR (INT/RUS/RFBR/P-184). (Corresponding author: Partha Mondal.) P. Mondal and V. Mishra are with the Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur 721302, India (e-mail:, parthaphy1987@gmail.com; vishwatoshmishra34@gmail.com). ",
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T1 - Cascaded Raman and Intermodal Four-Wave Mixing in Conventional Non-Zero Dispersion-Shifted Fiber for Versatile Ultra-Broadband Continuum Generation

AU - Mondal, Partha

AU - Bhatia, Nitin

AU - Mishra, Vishwatosh

AU - Haldar, Raktim

AU - Varshney, Shailendra K.

N1 - Funding Information: Manuscript received October 22, 2017; revised January 14, 2018 and February 18, 2018; accepted February 19, 2018. Date of publication February 27, 2018; date of current version March 27, 2018. The work of S. K. Varshney was supported by the project DST-RFBR (INT/RUS/RFBR/P-184). (Corresponding author: Partha Mondal.) P. Mondal and V. Mishra are with the Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur 721302, India (e-mail:, parthaphy1987@gmail.com; vishwatoshmishra34@gmail.com).

PY - 2018/6/15

Y1 - 2018/6/15

N2 - We demonstrate an efficient ultra-broadband supercontinuum generation in telecom-grade optical fiber by pumping Q-switched subnanosecond laser pulses (0.77 ns) at 1064 nm in the normal dispersion region of the fiber. The fiber supports several spatial modes at this pump wavelength. Multiple sidebands with six Raman stokes spanning over more than 1100 nm (starting well below 600 nm and extending beyond 1700 nm) are generated using very low input pump power (average 57 mW). Theoretical analysis shows that cascaded Raman and cascaded intermodal four-wave mixing processes can account for the generation of multiple sidebands. We also demonstrate that the modal composition of the input pump profile can provide an extra degree of freedom in tailoring the multiple Raman peaks in the output spectrum.

AB - We demonstrate an efficient ultra-broadband supercontinuum generation in telecom-grade optical fiber by pumping Q-switched subnanosecond laser pulses (0.77 ns) at 1064 nm in the normal dispersion region of the fiber. The fiber supports several spatial modes at this pump wavelength. Multiple sidebands with six Raman stokes spanning over more than 1100 nm (starting well below 600 nm and extending beyond 1700 nm) are generated using very low input pump power (average 57 mW). Theoretical analysis shows that cascaded Raman and cascaded intermodal four-wave mixing processes can account for the generation of multiple sidebands. We also demonstrate that the modal composition of the input pump profile can provide an extra degree of freedom in tailoring the multiple Raman peaks in the output spectrum.

KW - Fiber nonlinear optics

KW - multimode nonlinear interaction

KW - Raman scattering

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