Journal
PHOTONICS
Volume 2, Issue 3, Pages 906-915Publisher
MDPI
DOI: 10.3390/photonics2030906
Keywords
Kerr nonlinearity; Four-wave mixing; multimode optical fiber; frequency-doubling; third harmonic generation; new wavelength generation
Categories
Funding
- National Science Foundation [1522933]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1522933] Funding Source: National Science Foundation
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It is shown that it is possible to couple a laser beam and its frequency-doubled daughter into a multimode optical fiber through the four-wave mixing nonlinear process and generate a new wavelength. The frequency-doubled daughter can be generated in an external crystal with a large second order nonlinearity. It is argued that while this possibility is within the design parameter range of conventional multimode optical fibers, it necessitates a lower-bound for the core-cladding refractive index contrast of the multimode optical fiber.
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