Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: ASE suppression in Er3+ doped dual-core triangular lattice Photonic
  Crystal Fibers (PCFs) for communication wavelength   In this article, silica based triangular lattice PCF has been investigated
towards both narrowband and broadband dispersion compensation for application
in the communication wavelength. A dual core structure is obtained by
introducing two different air-hole diameters in the cladding of the PCF.
Dependence of individual structural parameters towards high negative dispersion
(both narrowband and broadband) has been investigated in details with multipole
mode based solver. The numerical investigation exhibits narrowband of very
large negative dispersion of -37,300 ps/nm/km around the wavelength of 1550 nm.
Present investigation also reports broadband dispersion values varying from
-800 ps/nm/km to -2600 ps/nm/km over a 200 nm wavelength (1400 nm to 1600 nm)
range, and kappa values near 300 nm, which matches well with standard single
mode fiber. Using the principle of power transfer from the inner core to the
outer core after the coupling wavelength, we have investigated possible design
of ASE suppressed amplifier in which wavelengths after the coupling wavelength
cannot be amplified as most of the power tunnel to the outer core, where doped
ion does not exist.

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The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: solv-int
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The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: econ
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-th
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The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
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The categories of this paper are: supr-con
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
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The categories of this paper are: stat