Intermodal Brillouin scattering in solid-core photonic crystal fibers
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Amer Inst Physics
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We investigate intermodal forward Brillouin scattering in a solid-core photonic crystal fiber (PCF), demonstrating efficient power conversion between the HE11 and HE21 modes, with a maximum gain coefficient of 21.4 W-1 km(-1). By exploring mechanical modes of different symmetries, we observe both polarization-dependent and polarization-independent intermodal Brillouin interaction. Finally, we discuss the role of squeeze film air damping and leakage mechanisms, ultimately critical to the engineering of PCF structures with enhanced interaction between high-order optical modes through flexural mechanical modes.
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Apl Photonics. Melville: Amer Inst Physics, v. 6, n. 3, 8 p., 2021.
