Optical fiber with extended bandwidth for crimp and cleave connectors

An optical fiber with a core and a cladding layer surrounding the core comprising:

• the core having a core index of refraction wherein the core is at least partially of silica glass doped with Germanium having a graded refractive index profile;
• the cladding have a cladding index of refraction wherein the cladding is at least partially silica;
• a first coating layer surrounding the cladding layer having a first coating layer index of refraction wherein the first coating layer is at least partially a polymer, and wherein the diameter of the first coating layer is greater than approximately 200 μm;
• wherein the core has a diameter greater than approximately 62.5 μm;
• and
• wherein the core index of refraction is greater than the cladding index of refraction and the first coating index of refraction is greater than the cladding index of refraction.

An optical fiber with a core and a cladding layer surrounding the core which has been drawn from a preform, the optical fiber comprising:

• the core having a core graded index of refraction following a power profile of Rα where α is between 1.5 and 3;
• the cladding have a cladding index of refraction of approximately non-doped silica;
• a first coating layer of polymer surrounding the cladding layer having a first coating layer index of refraction of approximately 1.46, the first coating layer being applied in a UV curable form during the drawing process of the optical fiber;
• wherein the core has a diameter greater than approximately 62.5 μm;
• wherein the core index of refraction is greater than the cladding index of refraction and the first coating index of refraction is greater than the cladding index of refraction;
• and
• wherein the first coating layer has an elongation at fracture approximately that of the core and the cladding, and wherein the diameter of the first coating layer of polymer is greater than approximately 200 μm.

An optical fiber with a silica core doped with Ge and a non-doped silica cladding layer surrounding the core which has been drawn from a preform, the optical fiber comprising:

• the core having a core graded index of refraction following a power profile of Rα where α is between 1.5 and 3 and a diameter of between 20 μm to 180 μm;
• the cladding have a cladding index of refraction of approximately non-doped silica and a diameter of between 100 μm. to 225 μm;
• a first coating layer of polymer surrounding the cladding layer having a first coating layer index of refraction of approximately 1.46, the first coating layer being applied in a UV curable form during the drawing process of the optical fiber;
• wherein the core has a diameter greater than approximately 62.5 μm;
• wherein the core index of refraction is greater than the cladding index of refraction and the first coating index of refraction is greater than the cladding index of refraction;
• and
• wherein the first coating layer has an elongation at fracture approximately of less than 20% and a Young's Modulus of greater than 50, and wherein the diameter of the first coating layer of polymer is greater than approximately 200 μm.