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Single-mode tellurite glass holey fiber with extremely large mode area for infrared nonlinear applications

Xian Feng, Wei H. Loh, Joanne C. Flanagan, Angela Camerlingo, Sonali Dasgupta, Periklis Petropoulos, Peter Horak, Ken E. Frampton, Nicholas M. White, Jonathan H.V. Price, Harvey N. Rutt, and David J. Richardson

Open Access Open Access

Abstract

We report the fabrication of a large mode area tellurite holey fiber from an extruded preform, with a mode area of 3000µm2. Robust single-mode guidance at 1.55µm was confirmed by both optical measurement and numerical simulation. The propagation loss was measured as 2.9dB/m at 1.55µm. A broad and flat supercontinuum from 0.9 to 2.5µm with 6mW output was obtained with a 9cm length of this fiber.

©2008 Optical Society of America

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Figures (5)
Fig. 1.
Fig. 1. Optical photographs of the cross-sectional views of (a) the extruded tellurite preform and (b) the resulting tellurite holey fiber with 410µm OD.

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Fig. 2.
Fig. 2. (a). Simulated near-field mode profiles of the fundamental mode (LP01) and the first higher-order mode (LP11) of the tellurite LMA HF at 1.55µm; (b) Calculated confinement losses of LP01 mode and LP11 mode of tellurite LMA HF between 0.9–5.0µm

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Fig. 3.
Fig. 3. (a). Observed guiding mode profile in tellurite LMA HF at 1.55µm; (b) simulated mode profile of fundamental mode (LP01) of tellurite LMA HF at 1.55 µm

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Fig. 4.
Fig. 4. Measured loss of tellurite LMA HF (the red dot) at 1.55µm and the loss spectrum of unclad tellurite fiber (the black line)

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Fig. 5.
Fig. 5. (a). Dispersion profile of the tellurite LMA HF; (b) SC spectra from a 9cm long tellurite LMA HF under various launch input powers; (c) Observed near-field image of the HF with 6mW output SC spectrum under incident pump power of 15.2mW. Note that the incident pump power was measured before it was launched into the HF.

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