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Hole-assisted lightguide fiber for large anomalous dispersion and low optical loss
Author(s) -
Takemi Hasegawa,
Eisuke Sasaoka,
M. Onishi,
Masayuki Nishimura,
Yasuhidé Tsuji,
Masanori Koshiba
Publication year - 2001
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.9.000681
Subject(s) - materials science , optics , dispersion (optics) , dispersion shifted fiber , optical fiber , graded index fiber , fiber , photonic crystal fiber , core (optical fiber) , refractive index , zero dispersion wavelength , all silica fiber , plastic clad silica fiber , optoelectronics , fiber optic sensor , composite material , physics
Hole-assisted lightguide fiber (HALF) is a microstructured fiber comprising a material index profile for waveguiding and air holes for modifying optical properties. Anomalous dispersion larger than those of the conventional fibers can be realized without severe degradation in optical loss, because of low power fraction in the holes and structural simplicity. We investigate into the causes of the loss of the fabricated HALFs, and show that a GeO2-doped core, in addition to the low power fraction, is desirable for low loss. The fabricated HALF exhibits a loss as low as 0.41 dB/km and a large anomalous dispersion of +35 ps/nm/km at 1550 nm.

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