Double clad tapered fiber for high power applications

Double-clad fiber with a tapered end for confocal endomicroscopy

We present a double-clad fiber coupler (DCFC) for use in confocal endomicroscopy to reduce speckle contrast, increase signal collection while preserving optical sectioning. The DCFC is made by incorporating a double-clad tapered fiber (DCTF) to a fused-tapered DCFC for achromatic transmission (from 1265 nm to 1325 nm) of > 95% illumination light trough the single mode (SM) core and collection o...

Investigation of Thermal Dispersion and Thermally-Induced Birefringence on High-Power Double Clad Yb:Glass Fiber Laser

In this work the effects of heat generation on the modes of Yb:Glass double clad fiber laser were investigated. The thermal dispersion and thermally-induced birefringence were considered when the gain medium becomes an anisotropic medium. The results showed considerable modifications of laser modes profiles, in particular for transfer magnetic (TM) and transfer electric (TE) modes which their p...

Graphene-clad tapered fiber: effective nonlinearity and propagation losses.

We derive a pulse propagation equation for a graphene-clad optical fiber, treating the optical response of the graphene and nonlinearity of the dielectric fiber core as perturbations in asymptotic expansion of Maxwell equations. We analyze the effective nonlinear and attenuation coefficients due to the graphene layer. Based on the recent experimental measurements of the nonlinear graphene condu...

Project ? 1777 p Theoretical studies of scaling double - clad fiber lasers to high power

Double Clad Hollow Core Fiber for Coherent Raman Scattering Microendoscopy

Sophie Brustlein, Pascal Berto, Patrick Ferrand, Alistair Muir, Jonathan Knight, Cyrille Billaudeau, Didier Marguet and Hervé Rigneault 1 Institut Fresnel, Université Aix Marseille, CNRS UMR 6133, Domaine Universitaire St Jérôme, 13397 Marseille cedex 20, France. 2 Centre for Photonics and Photonic Materials, Department of Physics, University of Bath, Bath, BA27AY, United Kingdom. 3 Centre d'Im...