期刊
JOURNAL OF LIGHTWAVE TECHNOLOGY
卷 35, 期 12, 页码 2385-2390出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2017.2681183
关键词
Anti-stokes waves; intermodal four-wave mixing; photonic crystal fiber; stokes waves
资金
- National Natural Science Foundation of China [61307109, 61475023]
- Beijing Youth Top-notch Talent Support Program [2015000026833ZK08]
- Natural Science Foundation of Beijing [4152037]
- Fund of State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications) China [IPOC2016ZT05]
- Hong Kong Scholars Program [PolyU G-YZ45]
In this paper, we demonstrated experimentally the intermodal four-wave mixing effect by launching femtosecond pulses centered at 1550 nm into deeply normal dispersion region in the fundamental guided-mode of an air-silica photonic crystal fiber with two zero dispersion wavelengths. When intermodal phase-matching condition is satisfied, the energy of the pump waves at 1550 nm in the fundamental guided-mode is converted to the anti-Stokes waves around 1258 nm and Stokes waves around 2018 nm both in the second-order guided-mode. When femtosecond pulses at input average power P-av of 90 mW are propagated inside 22-cm-long photonic crystal fiber, the conversion efficiencies eta(as) and eta(s) of the anti-Stokes and Stokes waves generated are 8.5% and 6.8%, respectively. We also observed that the influences of the fiber bending and walk-off effect between the fundamental and second-order guided-modes on intermodal four-wave mixing-based frequency conversion process are very small.
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