Optical Fiber For Applications Requiring High System Optical Signal-To-Noise Ratio Performance And Low Degradation From Nonlinear Impairments
First Claim
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1. An optical fiber, comprising:
- a core region;
a cladding region surrounding the core region;
a primary coating surrounding the cladding region and having a primary elastic modulus; and
a secondary coating surrounding the primary coating and having a secondary elastic modulus higher than the primary elastic modulus, the core region, cladding region, primary coating, and secondary coating together defining a total fiber structure having a microbend sensitivity, wherein a curve relating the microbend sensitivity to a ratio between the secondary elastic modulus and the primary elastic modulus on respective y and x axes has a substantially peaked shape defined by a positive-slope region and a negative-slope region, and the ratio is within the positive-slope region.
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Abstract
A optical fiber having core and cladding regions, a primary coating, and a secondary coating may be defined in part by a curve relating the microbend sensitivity to a ratio of the elastic modulus of the secondary coating to the elastic modulus of the primary coating (as plotted on respective y and x axes). The curve has a substantially peaked shape defined by a positive-slope region and a negative-slope region. The ratio of the elastic modulus of the secondary coating to the elastic modulus of the primary coating is within the positive-slope region.
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Citations
10 Claims
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1. An optical fiber, comprising:
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a core region; a cladding region surrounding the core region; a primary coating surrounding the cladding region and having a primary elastic modulus; and a secondary coating surrounding the primary coating and having a secondary elastic modulus higher than the primary elastic modulus, the core region, cladding region, primary coating, and secondary coating together defining a total fiber structure having a microbend sensitivity, wherein a curve relating the microbend sensitivity to a ratio between the secondary elastic modulus and the primary elastic modulus on respective y and x axes has a substantially peaked shape defined by a positive-slope region and a negative-slope region, and the ratio is within the positive-slope region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An optical fiber, comprising:
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a core region; a cladding region surrounding the core region; a primary coating surrounding the cladding region, the primary coating having a primary elastic modulus and an outside diameter between about 155 and 200 microns (μ
m); anda secondary coating surrounding the primary coating and having a secondary elastic modulus, the core region, cladding region, primary coating, and secondary coating together defining a total fiber structure having an effective area of between about 110 and 170 square microns (μ
m2) and an outside diameter of between about 190 and 260 μ
m, wherein a ratio of the secondary elastic modulus to the primary elastic modulus is less than about 1000. - View Dependent Claims (10)
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Specification