Raman-induced frequency shift in CS₂-filled integrated liquid-core optical fiber

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• 作者：Oscar D. Herrera ; L. Schneebeli ; K. Kieu ; R.A. Norwood ; N. Peyghambarian
• 关键词：Nonlinear optics ; Raman effect ; Fibers ; Nonlinear optical materials
• 刊名：Optics Communications
• 出版年：1 May, 2014
• 年：2014
• 卷：318
• 期：Complete
• 页码：83-87
• 全文大小：567 K

文摘

We demonstrate an optically tunable frequency shift in an all-fiber based system using a carbon disulfide (CS₂) filled integrated liquid-core optical fiber (i-LCOF) and co-propagating pulses of comparable temporal lengths. In 1 m of i-LCOF we were able to shift 18 ps pulses, a full spectral bandwidth at low pump peak powers, using the Raman-induced frequency shift and slow light effects. Numerical simulations of the pulse-propagation equations agree well with the observed shifts. We also analyze the contributions of both the Raman cross-frequency shift and slow light effects to the overall frequency shift. The system is all-fiber based and compact, making it suitable for applications such as a low power wavelength converter.