Ion exchange in glass has a long history as a simple and effective technology to produce
gradient-index structures and has been largely exploited in industry and in research …

Ultrafast laser inscription is used to fabricate the gain element for a mode-locked Er-doped
bismuthate glass waveguide laser. Mode-locking is initiated and stabilized by the use of a …

An optical waveguide amplifier, which can solve the problem of optical attenuation in optical
network transmission, is the key technology to solve optical chip integration and optical …

Optical waveguide amplifiers based on NaYF 4: Er 3+, Yb 3+ nanocrystals prepared by high-
temperature thermal decomposition method with forward and backward pump schemes are …

The hybrid integration of optical amplifier modules requires the development of a new kind
of pump/signal duplexers. In this letter, a new structure highly compatible with pump diode …

In this letter, a multilayer hybrid waveguide that can be applied to compensate the loss of
three-dimension photonic integrated circuit is designed. The multilayer waveguide structure …

LiYF4: 18% Yb, 2% Er nanocrystals and NaYF4: 18% Yb, 2% Er nanoparticles (NCs) were
synthesized by a solvothermal approach using oleic acid (OA) as the surfactant. With the …

A directional coupler (DC) Mach–Zehnder interferometer (MZI) thermal optical switch based
on a polymer and glass waveguide hybrid for three-dimensional (3D)-integrated chips is …

This article demonstrates a multilayer polymer-silica hybrid on-chip amplifier combining
mode division multiplexing method. The multilayer amplifier consists of a pumping silica …

High power single-mode pump laser diodes operating around 980nm are key components
for Erbium-doped devices. Much effort is still currently devoted to improve both their …