We present a method for designing optical fibers that support field-flattened, ring-like higher order modes, and show that the effective and group indices of its modes can be tuned by adjusting the widths of the guide's field-flattened layers or the average index of certain groups of layers. The approach provides a path to fibers that have simultaneously large mode areas and large separations between the propagation constants of their modes.
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| http://dx.doi.org/10.1364/OE.21.012683 | DOI Listing |
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Field-flattened, ring-like propagation modes.
Opt Express
May 2013
Lawrence Livermore National Laboratory, L-491, PO Box 808, Livermore, California 94551, USA.
We present a method for designing optical fibers that support field-flattened, ring-like higher order modes, and show that the effective and group indices of its modes can be tuned by adjusting the widths of the guide's field-flattened layers or the average index of certain groups of layers. The approach provides a path to fibers that have simultaneously large mode areas and large separations between the propagation constants of their modes.
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