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RESEARCH PRODUCT
In-fiber Fabry-Perot refractometer assisted by a long-period grating
Miguel V. AndrésD. Saez-rodriguezL. MosqueraJose Luis Cruzsubject
PHOSFOSMaterials scienceOptical fiberbusiness.industryAstrophysics::Instrumentation and Methods for AstrophysicsPhysics::OpticsLong-period fiber gratingAtomic and Molecular Physics and Opticslaw.inventionUltrasonic gratingOpticsRefractometerFiber Bragg gratinglawBlazed gratingOptoelectronicsbusinessFabry–Pérot interferometerdescription
We present an optical fiber refractometer based on a Fabry-Perot interferometer defined by two fiber Bragg gratings and an intracavity long-period grating that makes the light confined in the resonator interact with the surrounding medium. The external refractive index is monitored by the resonant frequencies of the Fabry-Perot interferometer, which can be measured either in transmission or in reflection. In this first experiment, wavelength shifts measured with a resolution of 0.1 pm have allowed one to establish a refractive index detection limit of 2.1x10(-5).
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-02-18 | Optics Letters |