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Optica, Optics Express, 26(24), p. 30338, 2016

DOI: 10.1364/oe.24.030338

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Inter-modal four-wave mixing study in a two-mode fiber

Journal article published in 2016 by Søren Michael Mørk Friis, Ioannis Begleris, Yongmin Jung, Karsten Rottwitt, Karsten Rottwick, Periklis Petropoulos, David J. Richardson, Peter Horak ORCID, Francesca Parmigiani
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We demonstrate efficient four-wave mixing among different spatial modes in a 1-km long two-mode fiber at telecommunication wavelengths. Two pumps excite the LP01 and LP11 modes, respectively, while the probe signal excites the LP01 mode, and the phase conjugation (PC) and Bragg scattering (BS) idlers are generated in the LP11 mode. For these processes we experimentally characterize their phase matching efficiency and bandwidth and find that they depend critically on the wavelength separation of the two pumps, in good agreement with the numerical study we carried out. We also confirm experimentally that BS has a larger bandwidth than PC for the optimum choice of the pump wavelength separation.