Bend-insensitive fiber adds a layer of glass around the core of the fiber which has a lower index of refraction that literally "reflects" the weakly guided modes back into the core when stress normally causes them to be coupled into the cladding. In 2007, a new type of "bend-insensitive" singlemode fiber was introduced, followed by multimode fiber in. ClearCurve ® ZBL and LBL bend-improved single-mode fibers are cost-effective solutions designed to meet a wide array of applications and deployment conditions. ClearCurve bend-insensitive fibers are compliant with ITU-T Recommendations G. 652, which describes its characteristics, has been adapted to this experience. Nevertheless, the specific use in an optical access network puts different demands on. rformance. A dual-layer acrylate is coated over the cladding to provide high product reliability and allows eas splicing. At 1310 nm, for example, the maximum bend induced attenuation, due to. YOFC EasyBand Plus bending insensitive single-mode fibre combines two attractive features: excellent low macro-bending sensitivity and low water-peak level.
