The centrosymmetric nature of silica fibre precludes the realisation of second-order
nonlinear processes in optical fibre systems. Recently, the integration of 2D materials with …

Silica-based optical fibres are a workhorse of nonlinear optics, providing ready access to a
range of nonlinear phenomena including solitons and self-phase modulation. However, they …

Nonlinear optical fibres have been employed for a vast number of applications, including
optical frequency conversion, ultrafast laser and optical communication,,–. In current …

A step-index tellurite optical fiber with loss∼ 0.02 dB/m at∼ 1545 nm was fabricated based
on TeO_2− Bi_2O_3− ZnO− Na_2O glass. With a nanosecond laser operated at∼ 1545 …

We demonstrate the first achievement of continuous-wave (CW) pumped second harmonic
generation (SHG) in few-and mono-layer gallium selenide (GaSe) flakes, which are coated …

Silica-based highly nonlinear fibers (HNLFs) have been utilized as platforms for various
applications, including fiber lasers, optical amplifiers, and optical signal processings. For the …

Using optical microfibers, phase matching between different propagation modes allows for
third-harmonic generation (THG). After detailing the relevant phase matching conditions and …

Two-dimensional (2D) layered materials such as GaSe recently have emerged as novel
nonlinear optical materials with exceptional properties. Although exhibiting large nonlinear …

Second harmonic generation in an air-silica microstructured optical fiber pumped by
subnanosecond pulses is used in order to initiate modulation instability processes in normal …

Phase-matched electric-field-induced second-harmonic generation is demonstrated in
single-mode germania-doped silica fibers. A periodic second-order nonlinearity is induced …