15 research outputs found
Wavelength reuse scheme in a WDM unidirectional ring network using a proper fibre grating add/drop multiplexer
A tunable fiber laser for application to helium optically pumped magnetometers
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Design of Grating-Based Fiber Lasers : Power and Spectral Behaviors
The spectral and power characteristics of Nd doped silica-based fiber lasers utilizing two intracore Bragg grating reflectors have been investigated. The operation of low-threshold, high efficiency Nd doped fiber lasers are reported. The frequency of these lasers can be tuned to resonance with several absorption lines of atomic or molecular species. Coupled cavity effects have been used to reduce the linewidth of the laser emission and to carry out a single model Nd fiber laser. The influence of the medium birefringence on the laser emission in a low and in a Hi-Bi fiber is presented. Recently, a new photorefractive effect occurring in cerium doped fluorozirconate fibers has been demonstrated in our laboratories. To demonstrate the potentiality of Bragg gratings to fluorozirconate fiber technology, a fiber laser using a Bragg reflector written in a Ce-Er codoped ZBLALi fiber is reported
Rare Earth Doped Fluoride Fibre Lasers Using Direct-Coated Dielectric Mirrors
In this letter, we report on the realisation of fluoride fibre lasers. Mirrors were directly deposited on fibre endfaces. Using this technique, we have fabricated stable fibre lasers. Then, we present our recent results on fluoride fibre lasers
Densification involved in the UV-based photosensitivity of silica glasses and optical fibers
A comprehensive survey of photosensitivity in silica glasses and optical fiber is reviewed. Recent work on understanding the mechanisms contributing to germanium or aluminum doped fiber photosensitivity is discussed within tbe framework of photoelastic densification models