OPTICAL FIBER FOR APPLICATIONS REQUIRING HIGH SYSTEM OPTICAL SIGNAL-TO-NOISE RATIO PERFORMANCE AND LOW DEGRADATION CAUSED BY NONLINEAR IMPAIRMENTS

摘要

To provide an optical fiber for applications requiring high system optical signal-to-noise ratio performance and low degradation caused by nonlinear impairments.SOLUTION: An optical fiber 200 having a core region 202, a cladding region 206, a primary coating 210 and a secondary coating 214 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.SELECTED DRAWING: Figure 2