Validation of a single-mode polymer optical fiber sensor and interrogator for large strain measurements

Abdi, O.; Peters, Kara; Kowalsky, Mervyn J.; Hassan, Tasnim

doi:10.1088/0957-0233/22/7/075207

Cited by 8 publications

(8 citation statements)

References 14 publications

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“…In a sequential study [ 69 ], the nonlinear phase sensitivity was evaluated (3.1 × 10 6 rad.m −1 ) and the mechanical and photoelastic nonlinear coefficients were also calculated, being 11.4 and 16 respectively. In order to validate a SM-POF sensor and an interrogator for large strain measurements, this Mach-Zehnder interferometer was rearranged to allow an automated measurement of the phase shift [ 70 ]. A Mach-Zehnder interferometer based on the same approach was used to measure the phase shift induced by an ultrasonic wave emitted by a calibrated piezoelectric transducer on part of the optical fiber under test and immersed in water [ 71 ].…”

Section: Sensing Techniquesmentioning

confidence: 99%

Optical Sensors Based on Plastic Fibers

Bilro

Alberto

Pinto

et al. 2012

Sensors

317

131

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The recent advances of polymer technology allowed the introduction of plastic optical fiber in sensor design. The advantages of optical metrology with plastic optical fiber have attracted the attention of the scientific community, as they allow the development of low-cost or cost competitive systems compared with conventional technologies. In this paper, the current state of the art of plastic optical fiber technology will be reviewed, namely its main characteristics and sensing advantages. Several measurement techniques will be described, with a strong focus on interrogation approaches based on intensity variation in transmission and reflection. The potential applications involving structural health monitoring, medicine, environment and the biological and chemical area are also presented.

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Section: Sensing Techniquesmentioning

confidence: 99%

Optical Sensors Based on Plastic Fibers

Bilro

Alberto

Pinto

et al. 2012

Sensors

317

131

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“…It is worth mentioning that the large core size of both fibers provides tolerance to core misalignment in this connectorization method. However, for connectorizations between two single mode fibers with a core diameter of under 10 μm, this method is not applicable, since the POF core is not perfectly aligned in the geometric center of the ferrule, and thus the misalignment between cores of the POF and the SOF would result in much higher attenuation and degraded mode coupling 9 . Therefore, the connectors with high coupling losses could not be used for FBG inscription real-time monitoring.…”

Section: Introductionmentioning

confidence: 99%

Convenient connectorization technique between single mode polymer optical fiber and single mode silica optical fiber

Yue

Min

et al. 2022

Eighth Symposium on Novel Photoelectronic Detection Technology and Applications

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“…O. Abdi et al demonstrated an M–Z interferometer configuration using a single mode PMMA POF with a strain measurement of up to 10%. The phase response of the interferometer was measured with a 3 × 3 coupler interrogator and two photodetectors integrated with a data acquisition system [ 23 ]. Although PMMA POF can be used for M–Z interferometric sensors, the glass transition temperature and the elongation at break of the PMMA material are smaller than those for the PC material.…”

Section: Introductionmentioning

confidence: 99%

“…It is worth mentioning that the large core size of both fibers provides tolerance to core misalignment in this connectorization method. However, for connectorization between two single-mode fibers with a core diameter of under 10 μm, this method is not applicable, since the POF core is normally not perfectly aligned in the geometric center of the ferrule, and thus the misalignment between cores of the POF and the SOF would result in much higher attenuation and degraded mode coupling [ 23 ]. Therefore, before going to the M–Z interferometric sensing part, a connection method by monitoring projecting images is demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Polycarbonate mPOF-Based Mach–Zehnder Interferometer for Temperature and Strain Measurement

Yue

Chen

et al. 2020

Sensors

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In this paper, an endlessly single mode microstructured polymer optical fiber (mPOF) in a Mach–Zehnder (M–Z) interferometer configuration is demonstrated for temperature and strain measurement. Because there is no commercial splicer applied for POF-silica optical fiber (SOF) connectorization, prior to the M–Z interferometric sensing, we introduce an imaging projecting method to align a polycarbonate mPOF to a SOF and then the splice is cured permanently using ultraviolet (UV) glue. A He-Ne laser beam at 632.8 nm coupled in a SOF is divided by a 1 × 2 fiber coupler to propagate in two fiber arms. A piece of mPOF is inserted in one arm for sensing implementation and the interference fringes are monitored by a camera. For non-annealed fiber, the temperature sensitivity is found to be 25.5 fringes/°C for increasing temperature and 20.6 fringes/°C for decreasing temperature. The converted sensitivity per unit length is 135.6 fringes/°C/m for increasing temperature, which is twice as much as the silica fiber, or 852.2 rad/°C/m (optical phase change versus fiber temperature), which is more than four times as much as that for the PMMA fiber. To solve the sensitivity disagreement, the fiber was annealed at 125 °C for 36 h. Just after the thermal treatment, the temperature measurement was conducted with sensitivities of 16.8 fringes/°C and 21.3 fringes/°C for increasing and decreasing process, respectively. One month after annealing, the linear response was improved showing a temperature sensitivity of ~20.7 fringes/°C in forward and reverse temperature measurement. For the strain measurement based on non-annealed fiber, the sensitivity was found to be ~1463 fringes/%ε showing repeatable linear response for forward and reverse strain. The fiber axial force sensitivity was calculated to be ~2886 fringes/N, showing a force measurement resolution of ~3.47 × 10−4 N. The sensing methodology adopted in this work shows several advantages, such as very low cost, high sensitivity, a straightforward sensing mechanism, and ease of fabrication.

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Validation of a single-mode polymer optical fiber sensor and interrogator for large strain measurements

Cited by 8 publications

References 14 publications

Optical Sensors Based on Plastic Fibers

Optical Sensors Based on Plastic Fibers

Convenient connectorization technique between single mode polymer optical fiber and single mode silica optical fiber

Polycarbonate mPOF-Based Mach–Zehnder Interferometer for Temperature and Strain Measurement

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