H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 10/18 (2006.01) C03B 37/014 (2006.01) G02B 6/34 (2006.01)
Patent
CA 2202586
The present invention relates to a dispersion- compensating fiber for improving a transmission system with it in total chromatic dispersion and dispersion slope in the 1.55 µm wavelength band. The dispersion compensating fiber according to the present invention is characterized by having the following characteristics for light in the 1.55 µm wavelength band: chromatic dispersion preferably not less than -40 ps/km/nm and not more than 0 ps/km/nm; dispersion slope not less than -0.5 ps/km/nm2 and not more than -0.1 ps/km/nm2; transmission loss not more than 0.5 dB/km; polarization mode dispersion not more than 0.7 ps.cndot.km-1/2; cut-off wavelength not lees than 0.7 µm and not more than 1.7 µm in the length of 2 m; and bending loss at a diameter of 20 mm, not more than 100 dB/m. The dispersion-compensating fiber is optically connected at a ratio of appropriate lengths with a dispersion-shifted fiber as a compensated object; which can improve a system including the dispersion-compensating fiber in a total chromatic dispersion and dispersion slope of the system in the 1.55 µm band.
Kanamori Hiroo
Kashiwada Tomonori
Koyano Yasushi
Nishimura Masayuki
Onishi Masashi
Marks & Clerk
Sumitomo Electric Industries Ltd.
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