Graded-index optical fiber
First Claim
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1. An optical fiber comprising:
- a core having a graded refractive index profile; and
a clad surrounding the core, wherein a difference between differential mode delays (DMDs) at wavelengths of about 1300 nm and about 850 nm within the core is increased in a radial direction, the difference between the DMDs at both the wavelengths has a value equal to or less than 0.6 ns/km between a position corresponding to 50% of a radius of the core and a center of the core.
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Abstract
An optical fiber having a core that has a graded refractive index profile is disclosed. A clad surrounds the core and traps light within the core. A difference between differential mode delays (DMDs) at wavelengths of about 1300 nm and about 850 nm within the core is increased in a radial direction. The difference between the DMDs at both the wavelengths basically has a value equal to or less than 0.6 ns/km between a position corresponding to 50% of a radius of the core and a center of the core.
15 Citations
12 Claims
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1. An optical fiber comprising:
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a core having a graded refractive index profile; and
a clad surrounding the core, wherein a difference between differential mode delays (DMDs) at wavelengths of about 1300 nm and about 850 nm within the core is increased in a radial direction, the difference between the DMDs at both the wavelengths has a value equal to or less than 0.6 ns/km between a position corresponding to 50% of a radius of the core and a center of the core. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An optical fiber comprising:
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a core having a graded refractive index profile; and
a clad surrounding the core, wherein the core has a diameter of about 50 μ
m, a difference between differential mode delays (DMDs) at a first transmission wavelength and a second transmission wavelength within the core is increased in a radial direction, the difference between the DMDs at both the wavelengths basically has a value equal to or less than 0.6 ns/km between a position corresponding to 50% of a radius of the core and a center of the core, an absolute value of the instantaneous rate of change associated with DMD at the first transmission wavelength or the second transmission wavelength within the core basically has a value within a range of 0˜
0.9 between a position corresponding to 40% of the radius of the core and the center of the core. - View Dependent Claims (8, 9, 10)
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11. An optical fiber comprising:
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a core having a graded refractive index profile; and
a clad surrounding the core, wherein the core has a diameter of about 62.5 μ
m, a difference between differential mode delays (DMDs) at wavelengths of about 1300 nm and about 850 nm within the core is increased in a radial direction, the difference between the DMDs at both the wavelengths basically has a value equal to or less than 0.6 ns/km between a position corresponding to 50% of a radius of the core and a center of the core, an absolute value of the instantaneous rate of change associated with DMD at the wavelength about 1300 nm or about 850 nm within the core basically has a value within a range of 0˜
0.9 between a position corresponding to 32% of the radius of the core and the center of the core. - View Dependent Claims (12)
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Specification