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ABSTRACT: Inter-core crosstalk of a heterogeneous multi-core fiber was experimentally observed to increase more than 10 dB by applying microbending to the fiber. The increase was described theoretically based on bending-radius dependence of the crosstalk.
Optical Communication (ECOC), 2011 37th European Conference and Exhibition on; 10/2011
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R. Ryf,
A. Sierra,
R.-J. Essiambre,
A.H. Gnauck,
S. Randel,
M. Esmaeelpour,
S. Mumtaz,
P.J. Winzer,
R. Delbue,
P. Pupalaikis,
A. Sureka,
T. Hayashi,
T. Taru, T. Sasaki
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ABSTRACT: We experimentally demonstrate transmission of 6 mode-multiplexed 20-Gbd-QPSK signals over 1200 km of three-core microstructured fiber (3C-MSF). An aggregate single-wavelength capacity of 240 Gbit/s is recovered by off-line 6×6 coherent multiple-input multiple-output (MIMO) digital signal processing.
Optical Communication (ECOC), 2011 37th European Conference and Exhibition on; 10/2011
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ABSTRACT: UBIF having compressive residual stress at cladding surface without additional layer is newly developed, which realizes both 13 times longer lifetime at 1.3mm-radius bending and 100 times lower 25-years failure probability at 5mm-radius bending compared with those of conventional UBIF.
Optical Communication (ECOC), 2010 36th European Conference and Exhibition on; 10/2010
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ABSTRACT: We propose a novel concept of cladding structure in all-solid photonic bandgap fibers. It promises low bending and confinement losses with single-mode operation. The mechanism is based on the new concept of heterostructured cladding.
Optical Communication, 2009. ECOC '09. 35th European Conference on; 10/2009
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ABSTRACT: Novel chromatic dispersion measurement is demonstrated with simple setup based on phase mismatching four-wave-mixing. According to high accuracy of measured dispersion spectra, zero-dispersion wavelength and higher order dispersion parameters of HNLF can be determined.
Optical Communication, 2009. ECOC '09. 35th European Conference on; 10/2009
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ABSTRACT: Fluorine-doped cladding with a Delta<sup>-</sup> of -0.2% was employed for the dispersion compensation fiber with triple-cladding structure, which successfully realized the dispersion less than -300 ps/km/nm while keeping a figure of merit higher than 350 ps/nm/dB
Optical Fiber Communication Conference, 2006 and the 2006 National Fiber Optic Engineers Conference. OFC 2006; 04/2006
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ABSTRACT: Low-loss optical fibers are now indispensable transmission media for transmission systems. Recently, the ultralow-loss performance for long transmission systems, the water-loss-free performance for wide-band wavelength-division-multiplexing (WDM) systems, the hydrogen-loss-insensitive performance for system reliability, and the bending-loss-insensitive performance for access or indoor applications have attracted much interest. In this regard, pure-silica-core fibers (PSCFs) are suitable, and unprecedented low-loss PSCFs have been successfully fabricated. This paper introduces the recent progress of low-loss PSCFs and their possible impact on transmission systems.
Journal of Lightwave Technology 12/2005; 23(11):3541- 3550. · 2.78 Impact Factor
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ABSTRACT: A transmission line with 240 km of low-slope non-zero dispersion-shifted fibre is proved to enable cost effective upgrade from a completely dispersion compensation free 10-Gbit/s WDM system to an in-line dispersion compensation free 40-Gbit/s WDM system.
Optical Communication, 2005. ECOC 2005. 31st European Conference on; 10/2005
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ABSTRACT: Water-free pure-silica-core fibre has been developed for the first time. It exhibits ultra-low loss of 0.247 dB/km at 1383 nm and 0.170 dB/km at 1550 nm, representing the lowest-loss G.652D fibre. Excellent durability against hydrogen ageing owing to pure-silica-core has also been verified.
Electronics Letters 11/2004; · 0.96 Impact Factor