Cooperation between laser and optical fiber

An article of manufacture having an axis and comprising:

• an optical fiber component;
• and
• an intermediate body of a glass material axially attached to the optical fiber component at a first end thereof;
• wherein the optical fiber component includes:
• two first optical fiber elements each having a first glass content of a first glass medium, each of the two first optical fiber elements carrying a corresponding group of multiple dielectric boundaries extending across the axis, and
• a second optical fiber element having a second glass content of a second glass medium, the second glass content being different from the first glass content;
• wherein the intermediate body is dimensioned to define an angle of divergence of an optical mode of the optical fiber component propagating through the intermediate body to have a first value at the first end and a second value a location within the intermediate body away from the first end, the first value being larger than the second value.