Optical fiber for extended wavelength band

Details Optical fiber for extended wavelength band Optical fiber for extended wavelength band

2005-04-19

2005-04-19

Bovernick, Rodney (Department: 2874)

Optical waveguides

Optical fiber waveguide with cladding

Utilizing multiple core or cladding

Reexamination Certificate

active

06882789

ABSTRACT:
An optical transmission fiber for use in a wavelength division multiplexing transmission system is disclosed. The transmission fiber includes an inner core surrounded by a first, second and at least a third glass layer along the length of the fiber. The first glass layer has a depressed refractive-index difference and the second glass layer has a refractive-index difference of substantially zero. The third glass layer has a positive refractive-index difference. The fiber has an improved relationship between dispersion slope and depressed profile volume. The fiber can have a dispersion value of at least 1.5 ps
m/km and a dispersion slope of less than about 0.07 ps
m2/km over an extended range of carrier wavelengths for the transmission system, such as the range 1450-1650 nm.

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