All-fiber systems for third harmonic generation are of great interest because they can be
used for the inverse process, namely, the generation of entangled photon triplets. Usually …

Second harmonic generation (SHG) in glass optical fibers calls for creating a second order
susceptibility in the fiber glass and for achieving phase matching between the pump and the …

Optical fibers provide a favorable medium for nonlinear optical processes owing to the small
mode field size and concurrently high optical intensity combined with the extended …

We demonstrate that exposed-core microstructured optical fibers offer multiple degrees of
freedom for tailoring third-harmonic generation through the core diameter, input polarization …

Frequency conversion in glass optical fibers requires both phase and group velocity
matching between the pump and the higher harmonic when working with short pulses. We …

Intermodal third-harmonic generation using waveguides is an effective frequency
conversion process due to the combination of long interaction lengths and strong modal …

We analyze the origins of the luminescence in germania-silica fibers with high germanium
concentration (about 30 mol.% GeO2) in the region 1-2 {\mu} m with a laser pump at the …

Increasing bandwidth demand in optical communication systems has led to significant
research efforts in manufacturing optical fibre. Thulium (Tm) doped fibres have a lot of …

Three-photon spontaneous parametric downconversion (TPSPDC) is a challenging problem
in nonlinear quantum optics. A highly doped germania-silica optical fiber is a good …