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.

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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
Application number
ES9802520A
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Spanish (es)
Other versions
ES2150386A1 (en
Inventor
Gordo J Alfredo Guemes
Martin Jose Manuel Menendez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Universidad Politecnica de Madrid
Original Assignee
Universidad Politecnica de Madrid
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Filing date
Publication date
Application filed by Universidad Politecnica de Madrid filed Critical Universidad Politecnica de Madrid
Priority to ES9802520A priority Critical patent/ES2150386B1/en
Publication of ES2150386A1 publication Critical patent/ES2150386A1/en
Application granted granted Critical
Publication of ES2150386B1 publication Critical patent/ES2150386B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • 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.

ES9802520A 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. Expired - Fee Related ES2150386B1 (en)

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

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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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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Publication number Publication date
ES2150386A1 (en) 2000-11-16

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