In-fiber modal interferometer based on dual-concentric-core photonic crystal fiber and its strain, temperature and refractive index characteristics

Chen, Weiguo; Lou, Shuqin; Wang, Liwen; Shen, Feng; Zou, Hui; Lu, Wenliang; Jian, Shuisheng

doi:10.1016/j.optcom.2011.02.019

Cited by 16 publications

(5 citation statements)

References 18 publications

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“…Another possibility to sense physical parameters is by means of mode PCF interferometers [38][39][40][41][42][43][44][45][46]. Such devices have centimetre lengths, are highly-stable over time, operate in a broad wavelength range or at extreme temperatures, and exhibit higher strain sensitivities than Bragg gratings.…”

Section: Point Sensors Based On Pcfsmentioning

confidence: 99%

[INVITED] New perspectives in photonic crystal fibre sensors

Villatoro

Zubía

2016

Optics & Laser Technology

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Section: Point Sensors Based On Pcfsmentioning

confidence: 99%

[INVITED] New perspectives in photonic crystal fibre sensors

Villatoro

Zubía

2016

Optics & Laser Technology

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“…PCF provides a new mechanism for light propagation and control owing to its unique quartz-air composite structure which is different from the other optical fiber. As a typical type of PCF, GPCF has many amazing properties such as controllable nonlinearity, endlessly single-mode characteristics, low bending loss, large mode area [14][15][16], and so on. Compared with bow tie panda fiber [17,18], high birefringence PCF [19] and other types of PCFs [20,21], the tri-hole PCF used has larger air holes, smaller core and better interference signal quality.…”

Section: Introductionmentioning

confidence: 99%

High temperature and strain dual-parameters fiber sensing based on intermodal interference and femtosecond laser fabricated fiber Bragg grating

Li¹,

He²,

Tan³

et al. 2023

Phys. Scr.

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In this paper, the sensor was proposed by combination of grapefruit photonic crystal fiber (GPCF) and femtosecond laser fabricated fiber Bragg grating (FBG) based on Sagnac interferometer. The GPCF was sandwiched between two single-mode fibers (SMFS) to form a SMF-GPCF-SMF structure, which was based on intermodal interference. The FBG with a central wavelength of 1535.32 nm was inscribed through polyimide coating and cladding by the femtosecond laser point-by-point inscribing method. The spectrum drift data of sensing structure were collected and the dual-parameters matrix of temperature-strain was constructed to realize the simultaneous measurement of temperature and strain. The experimental results showed that the linear range of the strain measurement was from 0 με to 2,000 με at different temperature, the wavelength of FBG and GPCF was red drift and blue drift, respectively, the average strain sensitivity at different temperature was 1.25 pm/με and -2.05 pm/με, all the linearity R2 are higher than 0.999, and has the high repeatability. The linear range of temperature measurement was from 20 ℃ to 450 ℃, the wavelength of FBG and GPCF was red drift and blue drift, respectively, the temperature sensitivity of FBG and GPCF was 15.17 pm/℃ and -8.87 pm/℃, the linearity was 0.99983 and 0.99989, respectively.

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“…For example, there are studied interferometers with a longperiod fiber grating [4,5], misaligned splicing point [4,9,10], a nonadiabatic taper [11], a photonic crystal fiber having collapsed air holes [5], and splice of fibers with unmatched mode profiles (single-mode/multimode fiber splice) [12][13][14][15]. These structures find application in sensors of strain, temperature [16,17], and bend [18] and also in multiwavelength fiber laser [19]. In fibers with two defects, effects of mode coupling are observed along with the interference effect [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Fiber-Optic Bend Sensor Based on Double Cladding Fiber

Иванов

Chertoriyskiy

2015

Journal of Sensors

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We develop and investigate fiber-optic bend sensor, which is formed by a section of double cladding SM630 fiber between standard SMF-28 fibers. The principle of operation of the sensor is based on coupling of the fiber core and cladding modes at the splices of fibers having different refractive index profiles. We use two sources with wavelengths 1328 and 1545 nm to interrogate the sensor. The dependences of transmission on curvature at these wavelengths are significantly different. We show that the proposed sensor is able to perform measurements of curvature with radii from meters to 26 cm with accuracy of about 3%.

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In-fiber modal interferometer based on dual-concentric-core photonic crystal fiber and its strain, temperature and refractive index characteristics

Cited by 16 publications

References 18 publications

[INVITED] New perspectives in photonic crystal fibre sensors

[INVITED] New perspectives in photonic crystal fibre sensors

High temperature and strain dual-parameters fiber sensing based on intermodal interference and femtosecond laser fabricated fiber Bragg grating

Fiber-Optic Bend Sensor Based on Double Cladding Fiber

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