Research collaboration of the team headed by prof. Ryszard Buczyński from Łukasiewicz – IMiF with the group of prof. Goëry Genty from Tampere University in Finland have revealed new ways for bringing about and describing complex physical processes in a new class of optical fibers made of special, multicomponent glasses.

The results essentially demonstrate how structure of light beams guided in fibers can be tailored and ordered by shaping the optical fiber at its nanostructure level. Their jointly achieved results have just appeared in the journal Nature Communications.

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The team of prof. Ryszard Buczyński have developed nanostructured graded-index fibers using highly nonlinear lead bismuth gallate glasses. In distinction to the mature silica fiber technology known from the telecommunications industry, the fiber developed by our researchers offers the advantage of strong nonlinear response and the potential of mid-infrared transmission – something which cannot be achieved with silica fibers!

The fiber enabled experimental demonstration of nonlinear optical dynamics leading to self-cleaning of multiple guided modes to the fundamental mode over very broad range of colors, which is referred to as the #supercontinuum #laser light by the fiber optics and laser community.

The achieved results prove the feasibility of transferring the attractive properties of the mature visible and near-infrared supercontinuum laser sources into the long-wave near infrared and mid-infrared wavelengths, which are attractive for bio-medical and chemical lab-on-fiber sensing applications.

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