Enhanced intermodal four-wave mixing for visible and near-infrared wavelength generation in a photonic crystal fiber

Yuan, Jinhui, Sang, Xinzhu, Wu, Qiang, Zhou, Guiyao, Li, Feng, Zhou, Xian, Yu, Chongxiu, Wang, Kuiru, Yan, Binbin, Han, Ying, Tam, Hwa Yaw and Wai, Ping-kong Alexander (2015) Enhanced intermodal four-wave mixing for visible and near-infrared wavelength generation in a photonic crystal fiber. Optics Letters, 40 (7). pp. 1338-1341. ISSN 0146-9592

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Official URL: http://dx.doi.org/10.1364/OL.40.001338

Abstract

We demonstrate experimentally an enhanced intermodal four-wave mixing (FWM) process through coupling positively chirped femtosecond pulses into the deeply normal dispersion region of the fundamental mode of an in-house fabricated photonic crystal fiber (PCF). In the intermodal phase-matching scheme, the energy of the pump waves at 800 nm in the fundamental mode is efficiently converted into the anti-Stokes waves around 553 nm and the Stokes waves within the wavelength range of 1445–1586 nm in the second-order mode. The maximum conversion efficiency of Nas and Ns of anti-Stokes and Stokes waves can be up to 21% and 16%, respectively. The Stokes frequency shift Ω is 5580  cm−1. The fiber bending and intermodal walk-off effect of pulses do not have significant influence on the nonlinear optical process.

Item Type: Article
Subjects: F300 Physics
Department: Faculties > Engineering and Environment > Physics and Electrical Engineering
Depositing User: Ay Okpokam
Date Deposited: 11 May 2015 12:20
Last Modified: 21 Mar 2016 11:09
URI: http://nrl.northumbria.ac.uk/id/eprint/22434

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