Nlight Oy

Harri Valkonen

Simo Kaarlo Tammela

Markku Rajala

Simo Tammela

Per Stenius

Mircea Hotoleanu

Pauli Kiiveri

An optical waveguide including a core, a buffer surrounding the core, and a cladding surrounding the buffer. The core, the buffer and the cladding include silica glass. A refractive index of the buffer is substantially equal to a refractive index of pure amorphous silica glass. The buffer may reduce bubble formation during manufacturing and may facilitate splicing of the waveguide. A numerical aperture of the waveguide may be fine-tuned by adjusting a radial dimension of the buffer in order to compensate variations in the refractive index of the core.

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Rühimaki, Finland

Harri Valkonen