Details
Original language | English |
---|---|
Pages (from-to) | 2351-2357 |
Number of pages | 7 |
Journal | Journal of lightwave technology |
Volume | 36 |
Issue number | 12 |
Publication status | Published - 15 Jun 2018 |
Externally published | Yes |
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
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
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In: Journal of lightwave technology, Vol. 36, No. 12, 15.06.2018, p. 2351-2357.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
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
KW - supercontinuum generation
UR - http://www.scopus.com/inward/record.url?scp=85042695649&partnerID=8YFLogxK
U2 - 10.1109/JLT.2018.2809914
DO - 10.1109/JLT.2018.2809914
M3 - Article
AN - SCOPUS:85042695649
VL - 36
SP - 2351
EP - 2357
JO - Journal of lightwave technology
JF - Journal of lightwave technology
SN - 0733-8724
IS - 12
ER -