The development of new active optical fibre devices requires materials with « augmented » intrinsic properties, though using luminescent ion (LI) –doped silica as host glass. Optical fibers containing Dielectric Nanoparticles (DNP) grown by phase separation are proposed. DNP would optimally fully encapsulate LI to produce « engineered » spectroscopic properties. To determine the composition of ...

we propose a new ring resonator side-coupled m-z interferometer all-optical switch throughthe pumped nonlinear directional coupler. by controlling pump power p to lead the coupler reflectivityr approaching to 1, the resonator finesse will be enhanced dramatically, and then the minimumswitching power in silica-based practice devices can be obtained. as a sample, we use a nonlinearcoupler made by...

Abstracf: High levels of net gain have recently been reported in sol-gel phosphorous-aluminium codoped silica waveguides. However, compositions providing both high net gain and large spectral width have not yet been achieved. In this paper we propose the use of laminated cores of multiple compositions to achieve improved spectral performance in erbium-doped waveguide amplifiers. We demonstrate ...

We report self-pulsation in an erbium-doped silica toroidal microcavity laser coupled to a tapered fiber and investigate the effects of pump power and taper-cavity coupling condition on the dynamic behaviors of the pulse train. The microcavity is pumped at 1444.8 nm, and lasing occurs at 1560.2 nm with a threshold of 12 microW. Experimental results are interpreted within the framework of ion-pa...

Background: Erbium-doped yttrium aluminum garnet (ER:YAG) lasers have been used to treat peri-implant, but there are some disputes. To dispel these negative views, our study aims compare the efficacy and safety of Er:YAG versus conventional mechanical debridement in treatment peri-implantitis.