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Proceedings Paper

Highly nonlinear chalcogenide optical fibers with flattened chromatic dispersion invariant to the core fluctuation and their performances of parametric amplification
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Paper Abstract

We report here the potential of fiber optical parametric amplification (FOPA) by using highly nonlinear chalcogenide double-cladding fibers. The fibers are designed with an AsSe2-based core layer surrounded by two cladding layers. The size and the refractive index differences (dn) between the core and cladding are investigated to obtain flattened chromatic dispersion spectra over a wide wavelength range up to the mid-infrared window. The inner cladding with dn2 is added to suppress the variation of the chromatic dispersion caused by the fluctuation of the core diameter. Our numerical calculations shows that very broad anomalous dispersion ranges from 5.0 μm up to 11.0 μm where the chromatic dispersion is less than 10 ps/km-nm can be obtained when the core diameter varies from 2.0 to 9.0 μm and the inner cladding diameter is kept at 9.0 μm. The dn1 and dn2 are 0.30 and 0.02, respectively. The FOPA calculation is carried out using a 3-cm-long fiber whose core diameter is 3 μm. When the pump power is 3 W at 5320 nm, a very broad gain bandwidth is obtained from 3.3 up to 11 μm. Moreover, the gain spectrum is flattened (about 32 ± 1 dB) in the ranges from 3.3 to 4.1 μm and from 7.5 up to 11.0 μm. When the core diameter fluctuates from 2.0 to 5.0 μm, the FOPA gain spectra can be maintained.

Paper Details

Date Published: 24 February 2016
PDF: 8 pages
Proc. SPIE 9744, Optical Components and Materials XIII, 97440Q (24 February 2016); doi: 10.1117/12.2212087
Show Author Affiliations
Hoang Tuan Tong, Toyota Technological Institute (Japan)
Kenshiro Nagasaka, Toyota Technological Institute (Japan)
Takenobu Suzuki, Toyota Technological Institute (Japan)
Yasutake Ohishi, Toyota Technological Institute (Japan)

Published in SPIE Proceedings Vol. 9744:
Optical Components and Materials XIII
Shibin Jiang; Michel J. F. Digonnet, Editor(s)

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