Abstract:
A side illuminated multi point multi parameter optical fiber sensor that requires no sensitive coating is provided. This sensor comprises an optical fiber having at least one removed cladding section as the sensitive region, at least one probing light source that side illuminates the fiber, a power supply, a detector, a signal processor and a display. The sensitive optical fiber is optically affected by the presence of a measurand medium that can fluoresce, phosphoresce, absorb and/or scatter the probing light. This probing light is guided by the fiber core towards a detector which measures the light intensity and this light intensity is correlated with a measurand.
Abstract:
A side illuminated multi point multi parameter optical fiber sensor that requires no sensitive coating is provided. This sensor comprises an optical fiber having at least one removed cladding section as the sensitive region, at least one probing light source that side illuminates the fiber, a power supply, a detector, a signal processor and a display. The sensitive optical fiber is optically affected by the presence of a measurand medium that can fluoresce, phosphoresce, absorb and/or scatter the probing light. This probing light is guided by the fiber core towards a detector which measures the light intensity and this light intensity is correlated with a measurand.
Abstract:
A side illuminated multi point multi parameter optical fiber sensor that requires no sensitive coating is provided. This sensor comprises an optical fiber having at least one removed cladding section as the sensitive region, at least one probing light source that side illuminates the fiber, a power supply, a detector, a signal processor and a display. The sensitive optical fiber is optically affected by the presence of a measurand medium that can fluoresce, phosphoresce, absorb and/or scatter the probing light. This probing light is guided by the fiber core towards a detector which measures the light intensity and this light intensity is correlated with a measurand.
Abstract:
A side illuminated multi point multi parameter optical fiber sensor that requires no sensitive coating is provided. This sensor comprises an optical fiber having at least one removed cladding section as the sensitive region, at least one probing light source that side illuminates the fiber, a power supply, a detector, a signal processor and a display. The sensitive optical fiber is optically affected by the presence of a measurand medium that can fluoresce, phosphoresce, absorb and/or scatter the probing light. This probing light is guided by the fiber core towards a detector which measures the light intensity and this light intensity is correlated with a measurand.
Abstract:
Abstract A system to increase the intensity of a light coupled into a collection waveguide, wherein the collection waveguide has first and second end faces and a side surface disposed between the first and second end faces, and the system comprises a light source configured to generate a light; an illuminating device configured to orient the light towards the side surface of the collection waveguide at one or more angles off normal; and a detector at the first and/or second end faces of the collection waveguide. Thus, the system provides an increased signal transmission by side coupling along the collection waveguide.
Abstract:
Systems and methods of side coupling, side illumination or side injection (as opposed to axial coupling, illumination, or injection) of a waveguide are disclosed. More particularly, it relates to increased coupling, by orders of magnitude, and, consequently, increased transmission, along a waveguide, of any wave by side coupling, side illumination, or side injection.
Abstract:
Un sistema de detección que comprende: una fibra óptica sensible (98), que tiene un primer (120) y un segundo (118) terminal, que tiene un núcleo (106), que se configura para que pueda colocarse en un entorno que contiene sustancias que son quimioluminiscentes, fosforescentes, fluorescentes, que dispersan o absorben luz, y que tiene al menos una región (92) en contacto directo con el entorno y que actúa como una región sensible de la fibra, en la que dicha fibra óptica sensible se ve afectada ópticamente por el entorno, y en la que dicha región sensible es sensible sin comprender ningún indicador químico; al menos una fuente de luz de sondeo (100), configurada para proporcionar iluminación lateral de la fibra óptica, produciendo una luz de sondeo que interactúa con un medio de medición y en el entorno de dicha región sensible para generar a partir de ella una luz de sondeo modificada que es sustancialmente ayudada por dicho medidor medio que interactúa con el entorno; y que está sustancialmente acoplado a dicho núcleo como una señal óptica (104), en donde el sistema de detección comprende además: un detector (108) acoplado ópticamente con dicho primer terminal (120) de dicha fibra óptica sensible para la recepción de la señal óptica al salir de dicho primer terminal (120), para medir la intensidad de la señal óptica en un rango dado de longitudes de onda y para correlacionar la intensidad con una señal eléctrica; y un procesador de señal (110) en comunicación de datos con dicho detector (108); por lo que la señal eléctrica se correlaciona con una cantidad del mensurando que se está midiendo.
Abstract:
A spectroscopic based optical fiber sensor includes a sensitive optical fibe r, a probing light source, a power supply, a detector means, a signal processin g means, and a display means. The sensitive optical fiber has a core and a cladding - said cladding has at least one sensitive region which is opticall y affected by the presence of at least one measurand. The probing light source , adjacent to the sensitive fiber, transversely illuminates the fiber at said sensitive region from the outside. The probing light is modified by the sensitive fiber, coupled into the optical fiber core, either as bound modes or leaky modes, as a light signal and guided to a detector means located at the terminus of the optical fiber. The detector means correlates the intensity o f the light signal with an electric signal and transmits the electric signal t o the signal processing means, wherein the electric signal is correlated to th e quantity being measured. The correlated quantity being transmitted and displayed on the display means.