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  • Vol. 27, Iss. 6 — Mar. 15, 2002
  • pp: 424–426

Raman effects in a highly nonlinear holey fiber: amplification and modulation

Z. Yusoff, J. H. Lee, W. Belardi, T. M. Monro, P. C. Teh, and D. J. Richardson  »View Author Affiliations


Optics Letters, Vol. 27, Issue 6, pp. 424-426 (2002)
http://dx.doi.org/10.1364/OL.27.000424


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Abstract

We experimentally demonstrate that a short length of highly nonlinear holey fiber (HF) can be used for strong L+ -band (1610–1640-nm) Raman amplification and ultrafast signal modulation. We use a pure silica HF with an effective area of just 2.85μm2 at 1550 nm, which yields an effective nonlinearity ~15 times higher than in conventional silica dispersion-shifted fiber. Using a 75-m length of this fiber, we obtained internal Raman gains of more than 42 dB and a noise figure of ~6 dB under a forward single-pump scheme, and the Raman gain coefficient was experimentally estimated to be 7.6 χ 10-14m/W . Also, an 11-dB signal extinction ratio in a Raman-induced all-optical modulation experiment was achieved with the same fiber.

© 2002 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.4080) Fiber optics and optical communications : Modulation
(190.5650) Nonlinear optics : Raman effect

Citation
Z. Yusoff, J. H. Lee, W. Belardi, T. M. Monro, P. C. Teh, and D. J. Richardson, "Raman effects in a highly nonlinear holey fiber: amplification and modulation," Opt. Lett. 27, 424-426 (2002)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-27-6-424


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