6533b829fe1ef96bd128a4d8

RESEARCH PRODUCT

Wavelength-codified fiber laser hydrogen detector

A. DiezJose L. CruzA. Gonzalez-seguraMiguel V. AndrésA. Ortigosa-blanch

subject

OnesMaterials sciencePhysics and Astronomy (miscellaneous)business.industryPhysics::Opticschemistry.chemical_elementÒpticaLaserlaw.inventionErbiumWavelengthOpticsZero-dispersion wavelengthchemistryFiber optic sensorlawFiber laserPhysics::Accelerator PhysicsDispersion-shifted fiberbusinessLasing threshold

description

We report a scheme for an optical hydrogen detector that codifies the information in wavelength. The system is based on an erbium-doped fiber laser with two coupled cavities and a Palladium-coated tapered fiber within one of the laser cavities. The tapered fiber acts as the hydrogen-sensing element. When the sensing element is exposed to a hydrogen atmosphere, its attenuation decreases changing the cavity losses. This change leads the system to switch lasing from the wavelength of the auxiliary cavity to the characteristic wavelength of the cavity which contains the sensing element. The detection level can be shifted by adjusting the reflective elements of the cavity containing the sensing element.

yearjournalcountryeditionlanguage
2005-11-14
10.1063/1.2130531https://doi.org/10.1063/1.2130531