کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
464476 697348 2012 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Supercontinuum generation in non-silica fibers
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
Supercontinuum generation in non-silica fibers
چکیده انگلیسی

The development of super continuum sources is driven by the requirements of a wide range of emerging applications. This paper points out how non-silica fibers are of benefit not only because their broad mid-IR transparency enables continuum generation in the 2–5 μm region but also since the high intrinsic nonlinearity of the glasses reduces the power-threshold for devices at wavelengths below 2 μm. For these glasses, the material zero-dispersion wavelength is typically shifted to long wavelengths compared to silica so dispersion tailoring is key to creating sources based on practical, near-IR, solid state pump lasers. We show how modeling work has produced fiber designs that provide flattened dispersion profiles with high nonlinearity coefficients and zero-dispersion wavelengths in the near-IR. Building on this flexibility, modeling of the pulse dynamics then demonstrates how coherent mid-IR supercontinuum sources could be developed. We also show the importance of the second zero-dispersion wavelength using bismuth fibers as an example. Nonlinear mode-coupling is shown to be a factor in larger core fibers for high-power applications. Demonstrations of supercontinuum in microstructured tellurite fibers, all-solid lead–silicate (SF57) fibers and in bismuth fibers and tapers are then reported to show what has been achieved experimentally using a range of materials and fiber geometries.


► Fiber design techniques for non-silica glasses.
► Multimode supercontinuum generation simulations in lead–silicate fibers.
► Simulations of coherent continuum generation in all-normal-dispersion tellurite fibers.
► Mid-IR supercontinuum generation in tellurite, lead–silicate and bismuth fibers and bismuth tapers.
► Nanosecond pumped mid-IR supercontinuum via Raman (Stokes) shifting of an Yb fiber source.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Fiber Technology - Volume 18, Issue 5, September 2012, Pages 327–344
نویسندگان
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