ES2150386B1 - SENSOR FOR THE MEASUREMENT OF THE REFRACTION INDEX AND THE TEMPERATURE OF A FLUID, CONSISTING IN A MIRROR CARVED AT THE END OF AN OPTICAL FIBER AND ONE OR VARIOUS BRAGG DIFFACTION NETWORKS ENROLLED IN THE FIBER. - Google Patents
SENSOR FOR THE MEASUREMENT OF THE REFRACTION INDEX AND THE TEMPERATURE OF A FLUID, CONSISTING IN A MIRROR CARVED AT THE END OF AN OPTICAL FIBER AND ONE OR VARIOUS BRAGG DIFFACTION NETWORKS ENROLLED IN THE FIBER.Info
- Publication number
- ES2150386B1 ES2150386B1 ES9802520A ES9802520A ES2150386B1 ES 2150386 B1 ES2150386 B1 ES 2150386B1 ES 9802520 A ES9802520 A ES 9802520A ES 9802520 A ES9802520 A ES 9802520A ES 2150386 B1 ES2150386 B1 ES 2150386B1
- Authority
- ES
- Spain
- Prior art keywords
- sensor
- fiber
- optical
- carved
- networks
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Light Guides In General And Applications Therefor (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
Sensor para la medida del índice de refracción, o del índice de refracción y la temperatura de un fluido o mezcla reactante, consistente en un espejo tallado en el extremo de una fibra óptica y una o varias redes de difracción de Bragg inscritas en el núcleo de la fibra. La interrogación del sensor se realiza mediante un dispositivo que consiste en una fuente de luz blanca (no monocromática), un dispositivo analizador de espectro óptico, un acoplador óptico y, de forma optativa, un dispositivo de multiplexación óptica. El sensor permite obtener el índice de refracción del medio en que se encuentra inmerso su extremo especular a través de las variaciones de la potencia óptica reflejada en el mismo y detectadas por el analizador, mientras que los espectros de reflexión de la red o redes de difracción integradas en el sensor operan como señales de referencia que permiten discriminar y compensar los posibles errores debidos a fluctuaciones de potencia de la fuente de luz o perturbaciones en elcamino óptico. Adicionalmente, el dispositivo descrito puede operar como sensor de temperatura, midiendo el desplazamiento de la longitud de onda de Bragg de la red o redes más cercanas al espejo tallado.Sensor for measuring the refractive index, or the refractive index and the temperature of a fluid or reactant mixture, consisting of a mirror carved at the end of an optical fiber and one or more Bragg diffraction networks inscribed in the core of the fiber. The interrogation of the sensor is carried out by means of a device consisting of a white light source (non-monochromatic), an optical spectrum analyzer device, an optical coupler and, optionally, an optical multiplexing device. The sensor allows to obtain the refractive index of the medium in which its specular end is immersed through the variations of the optical power reflected in it and detected by the analyzer, while the reflection spectra of the network or diffraction networks integrated into the sensor they operate as reference signals that allow discriminating and compensating for possible errors due to power fluctuations of the light source or disturbances in the optical path. Additionally, the described device can operate as a temperature sensor, measuring the displacement of the Bragg wavelength of the network or networks closer to the carved mirror.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9802520A ES2150386B1 (en) | 1998-12-01 | 1998-12-01 | SENSOR FOR THE MEASUREMENT OF THE REFRACTION INDEX AND THE TEMPERATURE OF A FLUID, CONSISTING IN A MIRROR CARVED AT THE END OF AN OPTICAL FIBER AND ONE OR VARIOUS BRAGG DIFFACTION NETWORKS ENROLLED IN THE FIBER. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9802520A ES2150386B1 (en) | 1998-12-01 | 1998-12-01 | SENSOR FOR THE MEASUREMENT OF THE REFRACTION INDEX AND THE TEMPERATURE OF A FLUID, CONSISTING IN A MIRROR CARVED AT THE END OF AN OPTICAL FIBER AND ONE OR VARIOUS BRAGG DIFFACTION NETWORKS ENROLLED IN THE FIBER. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2150386A1 ES2150386A1 (en) | 2000-11-16 |
ES2150386B1 true ES2150386B1 (en) | 2001-06-01 |
Family
ID=8305978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES9802520A Expired - Fee Related ES2150386B1 (en) | 1998-12-01 | 1998-12-01 | SENSOR FOR THE MEASUREMENT OF THE REFRACTION INDEX AND THE TEMPERATURE OF A FLUID, CONSISTING IN A MIRROR CARVED AT THE END OF AN OPTICAL FIBER AND ONE OR VARIOUS BRAGG DIFFACTION NETWORKS ENROLLED IN THE FIBER. |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES2150386B1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002044697A1 (en) * | 2001-10-02 | 2002-06-06 | Commissariat A L"Energie Atomique | Refractometer with blazed bragg gratings |
EP1238264B1 (en) | 2000-09-29 | 2004-12-29 | Commissariat A L'Energie Atomique | Refractometer with blazed bragg gratings |
FR2814810B1 (en) * | 2000-09-29 | 2003-01-03 | Commissariat Energie Atomique | BRAGG NETWORK REFRACTOMETER WITH INCLINED FEATURES |
IN2012DN01248A (en) * | 2009-08-03 | 2015-05-15 | Nitto Denko Corp |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4996419A (en) * | 1989-12-26 | 1991-02-26 | United Technologies Corporation | Distributed multiplexed optical fiber Bragg grating sensor arrangeement |
US5361130A (en) * | 1992-11-04 | 1994-11-01 | The United States Of America As Represented By The Secretary Of The Navy | Fiber grating-based sensing system with interferometric wavelength-shift detection |
US5426297A (en) * | 1993-09-27 | 1995-06-20 | United Technologies Corporation | Multiplexed Bragg grating sensors |
DK0713077T3 (en) * | 1994-11-17 | 2000-06-13 | Cit Alcatel | Method for detecting and / or measuring physical sizes using a distributed sensor |
-
1998
- 1998-12-01 ES ES9802520A patent/ES2150386B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ES2150386A1 (en) | 2000-11-16 |
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