Bend insensitive 200 micron optical fiber

Bend insensitive 200 micron optical fiber

Deployment of optical fiber cable in limited space and in tight bend conditions demands reduced diameter optical fiber and cable with bend insensitive fiber. To address this need, optical fiber with 200 micron outer coating diameter instead of 250 micron for conventional fiber has been developed. This white paper outlines various advantages of 200 micron fiber and its backward compatibility with conventional fiber. Optical fiber is used in all modern optical communications including long-haul, regional, access, and FTTX networks. An optical fiber is made up of three layers, namely, core, cladding, and coating. Light is guided down the center of the fiber called the "core". The core is surrounded by an optical material called the "cladding" that contains the light in the core using an optical phenomenon called "total internal reflection." The fiber is coated by a buffer layer that protects it from moisture and physical damage. The buffer or “coating”is what one strips off the fiber for termination or splicing. More protection is provided by the cable which has the fibers and strength members inside an outer protective covering called a "jacket" or a "sheath."

Optical fiber, 200 micron coating diameter, Bend insensitive fiber Optical fiber is used in all modern optical communications including long-haul, regional, access, and FTTX networks. An optical fiber is made up of three layers, namely, core, cladding, and coating. Light is guided down the center of the fiber called the “core”. The core is surrounded by an optical material called the “cladding” that contains the light in the core using an optical

Author

phenomenon called “total internal reflection.” The fiber is coated by a buffer layer that protects it from moisture and physical damage.

Issued

The buffer or “coating” is what one strips off the fiber for termination or splicing. More protection is provided by the cable which has the fibers and strength members inside an

Abstract

outer protective covering called a “jacket” or a “sheath.”

Keywords

The fiber coating is made of a UV curable polymer called acrylate, which acts to protect the inner glass. Dual layered coating structures are generally applied, which use a

Challenges in cable deployment in optical networks

low-modulus inner or buffer layer to cushion the fiber surrounded by a high-modulus outer coating to

Conclusions

increase the flexural rigidity and distribute the lateral external forces. Glass cladding and outer coating diameter are standardized to 125 μm and 250 μm respectively in various

References

international standards and recommendations. Standardization of these two critical dimensions of silica glass optical fiber has ensuredcompatibility between optical networks across the globe.
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