Simultaneous Strain and Temperature Sensor Based on a Fiber Mach-Zehnder Interferometer Coated with Pt by Iron Sputtering Technology

We demonstrated a fiber in-line Mach-Zehnder interferometer (MZI) coated with platinum (Pt) for the simultaneous measurement of strain and temperature. The sensor was fabricated by splicing a section of multimode fiber (MMF) between two single mode fibers (SMFs) and the Pt coating was prepared by iron sputtering technology. Fine interference fringes of over 20 dB with a compact size of 20 mm were achieved. The experimental results of the two different resonant dips showed strain sensitivities of −2.06 pm/με and −2.21 pm/με, as well as temperature sensitivities of 55.2 pm/°C and 53.4 pm/°C, respectively. Furthermore, it was found that the Pt coating can improve the strain sensitivity significantly, resulting in an increase of about 54.5%. In addition, the sensor has advantages of easy fabrication, low cost, and high sensitivity, showing great potential for the dual-parameter sensing of strain and temperature.

Download Full-text

A Novel In-Line Fiber Mach–Zehnder Interferometer Temperature Sensor Made of Thermally Expanded Core Fiber

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.635-637.856 ◽

2014 ◽

Vol 635-637 ◽

pp. 856-859 ◽

Cited By ~ 1

Author(s):

Ying Wu Zhou ◽

Sheng Yu Chen

Keyword(s):

Temperature Sensor ◽

Low Cost ◽

Single Mode ◽

Single Mode Fiber ◽

Zehnder Interferometer ◽

Core Mode ◽

Temperature Changes ◽

The Core ◽

Core Fiber ◽

Mach Zehnder Interferometer

A novel in-line fiber temperature sensor by splicing a piece of single mode fiber between two thermally expanded core fibers at their core-expanded ends is proposed and demonstrated. This structure forms an all fiber Mach–Zehnder interferometer due to the interference between the core mode and the cladding modes of the single mode fiber. The fabricated sensor is applied to measure temperature changes. The temperature sensitivity of the sensor at a length of 6.3cm is about 65.3 pm/°C. The proposed sensor is low cost, easily fabricated, and may be useful for detection of temperature.

Download Full-text

In-line Mach-Zehnder Interferometer based on Hybrid Structures for Refractive Index Sensin

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.c1008.1083s19 ◽

2019 ◽

Vol 8 (3S) ◽

pp. 36-40

Keyword(s):

Refractive Index ◽

High Sensitivity ◽

Single Mode ◽

Cost Effective ◽

Single Mode Fiber ◽

Zehnder Interferometer ◽

Refractive Index Sensor ◽

Compact Size ◽

Index Changes ◽

Mach Zehnder Interferometer

A Mach-Zehnder interferometer (MZI) built using several concatenated different structures is proposed as a refractive index sensor. This sensor is comprised of a microbubble, a section of reduced cladding fiber (RCF) and a core-offset single-mode fiber (SMF). These structures are joined together through specialized arc fusion splicing procedures. The sensor is characterised by immersing it in Cargille oil with refractive index values ranging from 1.30 to 1.39. The sensor exhibits linearity in respect to the refractive index changes, with a good sensitivity of 144.42 nm/RIU. The proposed MZI has the advantages of cost effective, repeatable fabrication, compact size and high sensitivity, which make it a promising sensor.

Download Full-text

INVESTIGATING THE EFFECT OF TAPER LENGTH ON SENSITIVITY OF THE TAPERED-FIBER BASED TEMPERATURE SENSOR

Jurnal Teknologi ◽

10.11113/jt.v78.7479 ◽

2016 ◽

Vol 78 (3) ◽

Cited By ~ 2

Author(s):

Baktiar Musa ◽

Yasmin Mustapha Kamil ◽

Muhammad Hafiz Abu Bakar ◽

Ahmad Shukri Mohd Noor ◽

Alyani Ismail ◽

...

Keyword(s):

Temperature Sensor ◽

Optimum Parameter ◽

Low Cost ◽

High Sensitivity ◽

Single Mode ◽

Careful Selection ◽

Tapered Fiber ◽

Tapered Optical Fiber ◽

Good Repeatability ◽

Selection Of

A temperature sensor using single-mode tapered fiber is presented. To better understand the behaviour of a tapered optical fiber, transmission experiments with different taper profiles, specifically waist length were performed. The effects of taper profiles on the sensitivity of the sensor were also investigated. It is demonstrated that careful selection of the taper profile can increase the sensitivity of the sensor. In our experiment, a good temperature sensing result was achieved using the optimum parameter. The best sensitivity achieved was 45.5 pm/°C that measured the range of temperature from 30°C to 120°C. The fabricated sensors are easy to fabricate and relatively low cost. Our results indicate that the tapered fiber based temperature sensor has high sensitivity and good repeatability.

Download Full-text

Integrated ultra-high-sensitivity temperature sensor based on asymmetric Mach-Zehnder interferometer and stress deformation of Aluminium-SiO2

IEEE Transactions on Instrumentation and Measurement ◽

10.1109/tim.2021.3115206 ◽

2021 ◽

pp. 1-1

Author(s):

Rui Yin ◽

Longdu Liu ◽

Qingjie Huang ◽

Lin Lu ◽

Hongliang Yang ◽

...

Keyword(s):

Temperature Sensor ◽

High Sensitivity ◽

Zehnder Interferometer ◽

Stress Deformation ◽

Mach Zehnder Interferometer

Download Full-text

High sensitivity fiber temperature sensor based PDMS film on Mach-Zehnder interferometer

Optical Fiber Technology ◽

10.1016/j.yofte.2019.102029 ◽

2019 ◽

Vol 53 ◽

pp. 102029 ◽

Cited By ~ 4

Author(s):

Jiaqi Gong ◽

Changyu Shen ◽

Yike Xiao ◽

Shuyi Liu ◽

Chong Zhang ◽

...

Keyword(s):

Temperature Sensor ◽

High Sensitivity ◽

Zehnder Interferometer ◽

Pdms Film ◽

Mach Zehnder Interferometer

Download Full-text

Simultaneous Measurement of Temperature and Refractive Index Using a Fiber Bragg Grating and a Multimode Fiber

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.130-134.4053 ◽

2011 ◽

Vol 130-134 ◽

pp. 4053-4056

Author(s):

Zheng Rong Tong ◽

Yang Guo ◽

Xiu Feng Yang ◽

Ye Cao

Keyword(s):

Refractive Index ◽

Fiber Bragg Grating ◽

Simultaneous Measurement ◽

High Sensitivity ◽

Single Mode ◽

Single Mode Fiber ◽

Bragg Grating ◽

Multimode Fiber ◽

Compact Size ◽

Good Operation

We introduce an all-fiber sensor capable of simultaneous measurement of temperature and refractive index (RI). The sensor system consists of a single mode fiber Bragg grating (FBG) and a single-mode-multimode-single-mode (SMS) structure which serves as a Mach-Zehnder interferometer (MZI), and the multimode fiber (MMF) is etched by hydrofluoric acid solution. The experimental results demonstrate that the temperature sensitivities of FBG and MZI are 0.016nm/°C and 0.093nm/°C, respectively, and the RI sensitivity of MZI achieves 226.25nm/RIU. The interesting properties of the sensor include compact size, high sensitivity and good operation linearity.

Download Full-text