Novel NCF-FBG Interferometer for Simultaneous Measurement of Refractive Index and Temperature

Li, Lecheng; Xia, Li; Wuang, Yuanwu; Ran, Yanli; Yang, Chengliang; Liu, Deming

doi:10.1109/lpt.2012.2226876

Cited by 38 publications

(22 citation statements)

References 12 publications

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“…To improve the accuracy of the RI measurement, the temperature induced wavelength shift must be precisely subtracted from the total amount of wavelength shift jointly induced by the temperature and RI change. A common way is to add another temperature sensor and measure the two parameters simultaneously [12][13][14][15].…”

Section: Working Principlesmentioning

confidence: 99%

See 1 more Smart Citation

Self-temperature-compensative refractometer based on singlemode–multimode–singlemode fiber structure

Chen

Han

Liu

et al. 2015

Sensors and Actuators B: Chemical

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Section: Working Principlesmentioning

confidence: 99%

“…In Ref. [12][13][14][15], fiber Bragg grating temperature sensors were used along with SMS-based refractometers to compensate the temperature-induced influence. In Ref.…”

Section: Introductionmentioning

confidence: 99%

Self-temperature-compensative refractometer based on singlemode–multimode–singlemode fiber structure

Chen

Han

Liu

et al. 2015

Sensors and Actuators B: Chemical

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“…To solve the RI-temperature crosstalk problem, various methods have been proposed [16][17][18][19][20][21]. One of the most common and effective methods is to introduce an FBG [16][17][18][19], which is sensitive to temperature but not to surrounding RI.…”

Section: Introductionmentioning

confidence: 99%

“…One of the most common and effective methods is to introduce an FBG [16][17][18][19], which is sensitive to temperature but not to surrounding RI. The temperature can be compensated even to realize the simultaneous measurement of RI and temperature by monitoring two dips, which are induced by FBG and MMI respectively in the transmission spectrum of sensor.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Multimode Interference Structure-Based Refractive Index and Temperature Fiber Sensor

et al. 2016

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A novel all-fiber sensor based on cascaded singlemode-no-core-singlemode (SNS) and siglemode-multimodesinglemode (SMS) fiber structure is proposed and investigated. Simulation results show that for the given fibers, by appropriately choosing the lengths of no-core fiber (NCF) and multimode fiber (MMF), the transmission spectrum will exhibit two distinguishable dips corresponding to SNS and SMS, respectively. The simultaneous measurement of liquids' refractive index and temperature can be realized by monitoring the two dips' central wavelength shifts. According to simulations, a corresponding sensor is fabricated and tested. The experimental results demonstrate the feasibility of the sensor and show that the sensor has the RI and temperature sensitivities of 113.66 nm/RIU and 9.2 pm/ o C, respectively.Index Terms-Optical fiber sensors, refractive index, temperature, multimode interference.

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“…Manuscript On the other hand, simultaneous measurement of temperature and refractive index (RI) is very important in many applications, especially in chemical or food industries for quality control and in environmental industries for contamination assessment. Because the resonant wavelength of a FBG inscribed on a standard single-mode fiber (SMF) is susceptible to temperature while not to surrounding RI, FBGs have also been widely used to realize the simultaneous measurement of temperature and RI when cascaded with another RI sensor [5][6][7][8][9][10]. Nevertheless, in these cases, either a special fiber (such as no-core fiber [5], and etched multimode fiber [6]) or a special structure (such as an external Fabry-Perot cavity [7], a pair of long period fiber gratings with the same parameters [8], core-offset Mach-Zehnder interferometer [9], and Up-Fusion-Bitaper pair [10]) is needed to construct a refractometer.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Measurement of Refractive Index and Temperature Using a Cascaded FBG/Droplet-Like Fiber Structure

et al. 2015

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Abstract-A simple and compact sensor based on a cascaded FBG/droplet-like fiber structure is proposed for simultaneous measurement of refractive index (RI) and temperature. The sensor can be easily constructed by mechanically bending a section of coating-stripped single-mode fiber at a FBG's pigtail. In the transmission spectrum, two kinds of dips induced by FBG and droplet-like structure are observed. The central wavelength of the dip caused by droplet-like structure is susceptible to both of surrounding RI and temperature while that caused by FBG is only dependent on temperature. A sensor with a 9.5 mm diameter of droplet-like structure is fabricated and experimentally studied. The experimental results demonstrate the feasibility of the proposed sensor and show that sensor possesses a high RI sensitivity of 157.8891 nm/RIU for the RI range from 1.3330 to 1.3785 and a temperature sensitivity of 10.3 pm/ o C.Index Terms-Optical fiber sensors, refractive index, temperature, Bragg grating, droplet-like structure.1530-437X (c)

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Novel NCF-FBG Interferometer for Simultaneous Measurement of Refractive Index and Temperature

Cited by 38 publications

References 12 publications

Self-temperature-compensative refractometer based on singlemode–multimode–singlemode fiber structure

Self-temperature-compensative refractometer based on singlemode–multimode–singlemode fiber structure

A Hybrid Multimode Interference Structure-Based Refractive Index and Temperature Fiber Sensor

Simultaneous Measurement of Refractive Index and Temperature Using a Cascaded FBG/Droplet-Like Fiber Structure

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