Waveguide optical fiber for parametric amplification within S-band optical range

An optical waveguide fiber, comprising:

• a core region having a refractive index, and an outer radius;
• an inner clad layer surrounding and in contact with the core region, the inner clad layer having a refractive index, and an outer radius;
• an outer clad layer surrounding and in contact with the inner clad layer, the outer clad layer having a refractive index;
• and
• wherein, the refractive index and the radii of the core region, the inner clad layer and the outer clad layer are chosen from the following ranges:
• the refractive index of the core region within the range of from about 1.338 to about 1.636;
• the refractive index of the inner clad layer within the range of from about 1.307 to about 1.597;
• the refractive index of the outer clad layer within the range of from about 1.311 to about 1.603;
• the outer radius of the core region within the range of from about 2.61 μm to about 3.19 μm;
• and
• the outer radius of the inner clad layer within the range of from about 5.31 μm to about 6.49 μm.

A method for constructing an optical waveguide fiber amplifier, comprising:

• forming a core region having an index of refraction within the range of from about 1.332 to about 1.628, and an outer radius within the range of from about 1.71 μm to about 2.09 μm;
• forming an inner clad layer about the core region, the inner clad layer having a index of refraction within the range of from about 1.301 to about 1.591, and an outer radius of about 4.41 μm to about 5.39 μm;
• and
• forming an outer clad layer about the inner clad layer, the outer clad layer having an index of refraction within the range of from about 1.305 to about 1.595.

A method for constructing an optical waveguide fiber, comprising:

• forming a core region having an index of refraction within the range of from about 1.338 to about 1.636, and an outer radius within the range of from about 2.61 μm to about 3.19 μm;
• forming an inner clad layer about the core region, the inner clad layer having an index with the range of from about 1.307 to about 1.597, and an outer radius of about 5.31 μm to about 6.49 μm;
• and
• forming an outer clad layer about the inner clad layer, the outer clad layer having a relative index within the range of from about 1.311 to about 1.603.