Refractive index measurement based on fiber Bragg grating connected with a multimode fiber core

Shao, Min; Qiao, Xueguang; Jiasurname, Zhenan; Fusurname, Haiwei; Liu, Yinggang; Li, Huidong; Zhao, Xiaole

doi:10.1016/j.optcom.2015.04.028

Cited by 19 publications

(10 citation statements)

References 16 publications

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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%

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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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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2016

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“…Optical fibers based on glass or polymers have been used extensively for refractive index sensing. These sensors are compact and can be designed for distributed [ 58 , 59 ] or tip-based [ 60 , 61 ] sensing. In order to increase the interaction of the optical field with the liquid analyte, that is, the refractive index sensitivity, optical fiber sensors can adopt different configurations, such as stripped [ 61 ] tapered [ 62 ], D-shaped [ 63 , 64 , 65 , 66 ], microstructured [ 67 , 68 ], and U-shaped [ 69 , 70 ] fibers.…”

Section: Examples Of Psa Tape-based Optical Sensorsmentioning

confidence: 99%

Pressure Sensitive Adhesive Tape: A Versatile Material Platform for Optical Sensors

Barrios

2020

Sensors

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Pressure sensitive adhesive (PSA) tapes are a versatile, safe and easy-to-use solution for fastening, sealing, masking, or joining. They are widely employed in daily life, from domestic use to industrial applications in sectors such as construction and the automotive industry. In recent years, PSA tapes have found a place in the field of micro- and nanotechnology, particularly in contact transfer techniques where they can be used as either sacrificial layers or flexible substrates. As a consequence, various optical sensing configurations based on PSA tapes have been developed. In this paper, recent achievements related to the use of PSA tapes as functional and integral parts of optical sensors are reviewed. These include refractive index sensors, optomechanical sensors and vapor sensors.

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“…Regarding MMI fiber based sensors, apart from measuring liquid level based on the change of the resonance wavelength, they have been used in special arrangements to detect individually or simultaneously a variety of parameters, such as: temperature, refractive index [12][13][14], strain [15,16], vibration [17], bending [16], magnetic field [18], and displacement [19]. For the refractive index detection, as it occurs for the liquid level detection, it is necessary to expose the fiber core to the external environment.…”

Section: Measurement Science and Technologymentioning

confidence: 99%

Intensity liquid level sensor based on multimode interference and fiber Bragg grating

Oliveira

Aristilde

Osório

et al. 2016

Meas. Sci. Technol.

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In this paper an intensity liquid level sensor based on a single-mode—no-core—single-mode (SMS) fiber structure together with a Bragg grating inscribed in the later single mode fiber is proposed. As the no-core fiber is sensitive to the external refractive index, the SMS spectral response will be shifted related to the length of no-core fiber that is immersed in a liquid. By positioning the FBG central wavelength at the spectral region of the SMS edge filter, it is possible to measure the liquid level using the reflected FBG peak power through an intensity-based approach. The sensor is also self-referenced using the peak power of another FBG that is placed before and far from the sensing part. The temperature error analysis was also studied revealing that the sensor can operate in environments where the temperature changes are minimal. The possibility to use a second setup that makes the whole device temperature insensitive is also discussed.

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Refractive index measurement based on fiber Bragg grating connected with a multimode fiber core

Cited by 19 publications

References 16 publications

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

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

Pressure Sensitive Adhesive Tape: A Versatile Material Platform for Optical Sensors

Intensity liquid level sensor based on multimode interference and fiber Bragg grating

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