Locally pressed etched optical fiber with PDMS coating for a sensor application

Kacik, Daniel; Tatár, Peter; Turek, Ivan

doi:10.1016/j.ijleo.2016.03.082

Cited by 6 publications

(7 citation statements)

References 14 publications

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“…In the traditional optical fiber sensing principle based on Mach-Zehnder interference, the light in the sensor can usually be divided into core-mode light (reference-mode light) and cladding-mode light (sensing mode light) [ 19 , 20 ]. The energy distribution of the light field can be analyzed according to the light intensity interference formula [ 20 , 21 , 22 , 23 ]:

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Section: Sensors Coated With the Pdmsmentioning

confidence: 99%

“… The fiber sensors coated with PDMS: ( a ) Tapered fiber embedded in PDMS [ 21 ]; ( b ) Core-fiber with PDMS cladding [ 22 ]; ( c ) Bowknot taper fiber coated with PDMS [ 23 ]; ( d ) S-shaped taper fiber coated with PDMS [ 24 ]. …”

Section: Figurementioning

confidence: 99%

“…When PDMS is coated on the fiber cladding, in order to fully reflect the negative thermal optical coefficient characteristic of the PDMS, the underlying fiber structure needs to be able to excite strong evanescent waves. The core off-set fiber, tapered fiber, and bend fiber can excite a strong evanescent wave, and it is characterized by simple preparation, strong plasticity, and low cost, which are widely concerned [20][21][22][23][24]. A fiber structure composed of multi-mode fiber (MMF), thin-mode fiber (TMF), and multi-mode fiber was used to verify the improvement of temperature sensitivity of the fiber sensor by PDMS in [20].…”

Section: A Variety Of Structures Based On Mach-zehnder Interferencementioning

confidence: 99%

“…In [21], the tapered fiber was obtained by tapering the standard single-mode fiber (SMF) [21], which can be used to measure the temperature; the fiber is shown as Figure 2a. The cladding of a section of fiber is removed and the new cladding of the fiber is replaced by a thicker PDMS layer [22], as shown in Figure 2b. In [23], the bowknot-type taper was prepared by melting two single-mode fibers into balls.…”

Section: A Variety Of Structures Based On Mach-zehnder Interferencementioning

confidence: 99%

“…Glass Slide The sensors of [21,23,24] were used to measure the temperature, and they can measure the pressure in [22,24]. Although the fiber structure and the measurement are different, PDMS plays a Various kinds of tapered fibers were made to measure different parameters.…”

Section: Pdms Coatingmentioning

confidence: 99%

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A Review of Coating Materials Used to Improve the Performance of Optical Fiber Sensors

Yang

Wang

et al. 2020

Sensors

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In order to improve the performance of fiber sensors and fully tap the potential of optical fiber sensors, various optical materials have been selectively coated on optical fiber sensors under the background of the rapid development of various optical materials. On the basis of retaining the original characteristics of the optical fiber sensors, the coated sensors are endowed with new characteristics, such as high sensitivity, strong structure, and specific recognition. Many materials with a large thermal optical coefficient and thermal expansion coefficients are applied to optical fibers, and the temperature sensitivities are improved several times after coating. At the same time, fiber sensors have more intelligent sensing capabilities when coated with specific recognition materials. The same/different kinds of materials combined with the same/different fiber structures can produce different measurements, which is interesting. This paper summarizes and compares the fiber sensors treated by different coating materials.

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Section: Sensors Coated With the Pdmsmentioning

confidence: 99%