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The Brillouin gain coefficient of a 1.16-m-long bismuth oxide-based photonic crystal fiber is measured by using a beat lock-in probe detection scheme to overcome the limitation caused by considerable pump beam back-reflection at splicing points. gB is found to be ~4times10-11 m/W.
We have successfully fabricated bismuth-based photonic crystal fiber by a stack and draw method. A redraw process was newly developed to make fine glass capillaries with high accuracy of diameter.
Optical time-division demultiplexing of 160-Gbit/s optical signals is demonstrated by using a 2-m-long dispersion-shifted Bi2O3-based photonic crystal fiber. Power penalties are less than 6 dB for all 10-Gbit/s tributaries.
We fabricated Bi2O3-based photonic crystal fiber having the higher refractive index core. This fiber shows the fusion-spliciability to SiO2 fiber, relatively low loss (1.8 dB/m), high nonlinearity (780 W-1km-1) and small dispersion (-5 ps/nm/km) at 1550 nm.
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