Nanostructure core fiber with enhanced performances: Design, fabrication and devices

Qc 20111129
We report a new type of silica-based all-solid fiber with a 2-D nanostructure core. The nanostructure core fiber (NCF) is formed by a 2-D array of high-index rods of sub-wavelength dimensions. We theoretically study the birefringence property of such fibers over a large wavelength range. Large-mode-area (LMA) structure with a typical high birefringence in the order of 10 -4 can be easily realized. The attenuation of the fabricated NCF is as low as 3.5 dB/km at 1550 nm. Higher macro- and micro-bending losses compared with those of the single-mode fiber (SMF) due to the reduced index difference have been observed experimentally, which suggests that the NCF is potentially useful for curvature and strain sensing applications. A fiber Bragg grating (FBG) inscribed in such a novel fiber is side-polished to make use of its evanescent field for refractive index sensing. The refractive index sensitivity obtained is one order of magnitude higher than that of the side-polished FBG in SMF, while the temperature and strain performances are comparable with those of the SMF-based FBG.

NATURVETENSKAP Fysik Atom- och molekylfysik och optik hsv//swe
NATURAL SCIENCES Physical Sciences Atom and Molecular Physics and Optics hsv//eng
s—Attenuation
bending loss
Bragg grating
dispersion
nanostructure
photonic crystal fiber
refractive index unit
sensing
side-poli

Yan, Minh Department of Photonics Engineering, Technical University of Denmark, Denmark(Swepub:kth)u1jenxfs (författare)
Ren, Guobin (författare)
Tong, Weijun (författare)
Cheng, Xueping (författare)
Zhou, Junqiang (författare)
Shum, Perry Ping (författare)
Ngo, Nam Quoc (författare)
Singapore Institute of Manufacturing Technology, Singaporeh Department of Photonics Engineering, Technical University of Denmark, Denmark (creator_code:org_t)

Ingår i:Journal of Lightwave Technology: IEEE27:11, s. 1548-15550733-87241558-2213

Av författaren/redakt...: Yu, Xia; Yan, Min; Ren, Guobin; Tong, Weijun; Cheng, Xueping; Zhou, Junqiang; visa fler...; Shum, Perry Ping; Ngo, Nam Quoc; visa färre...

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