High-sensitivity strain sensor implemented by hybrid cascaded interferometers and the Vernier-effect

Liu, Ling; Ning, Tigang; Jiao, Z.; Li, Pei; Li, Jing; Cao, Jiuwen; Gao, Xuekai; Zhang, Chuanbiao

doi:10.1016/j.optlastec.2019.105591

Cited by 57 publications

(8 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In 2019, Liu et al. demonstrated the optical Vernier effect introduced through the combination of a SI with a MZI in a series configuration, [ 67 ] described by Figure . The SI contained a section of a PANDA fiber and acted as the reference interferometer.…”

Section: Configurations and Applicationsmentioning

confidence: 99%

Optical Vernier Effect: Recent Advances and Developments

Gomes

Bartelt

Frazão

2021

Laser & Photonics Reviews

192

View full text Add to dashboard Cite

The optical analog of the Vernier effect applied to fiber interferometers is a recent tool to enhance the sensitivity and resolution of optical fiber sensors. This effect relies on the overlap between the signals of two interferometers with slightly detuned interference frequencies. The Vernier envelope modulation generated at the output spectrum presents magnified sensing capabilities (i.e., magnified wavelength shift) compared to that of the individual sensing interferometers that constitute the system, leading to a new generation of highly sensitive fiber sensing devices. This review analyses the recent advances and developments of the optical Vernier effect from a fiber sensing point-of-view. Initially, the fundamentals of the effect are introduced, followed by an extensive review on the state-of-the-art, presenting all the different configurations and types of fiber sensing interferometers used to introduce the optical Vernier effect. This paper also includes an overview of the complex case of enhanced Vernier effect and the introduction of harmonics to the effect.

show abstract

Section: Configurations and Applicationsmentioning

confidence: 99%

Optical Vernier Effect: Recent Advances and Developments

Gomes

Bartelt

Frazão

2021

Laser & Photonics Reviews

192

View full text Add to dashboard Cite

show abstract

“…In terms of interferometric structures, Vernier-based FOS have typically utilized Fabry–Perot interferometers 1 , 3 , 6 – 20 , 34 – 38 , 45 – 48 , 55 , 56 , Mach–Zehnder interferometers 29 – 32 , 42 , 51 , 53 , Sagnac interferometers 21 – 25 , 39 , 50 and fiber-optic ring resonators 28 , 40 , 41 , 52 , either connected in parallel or in tandem configurations, depending on the application. Although interferometric arrangements have been the preferred choice for generating the optical Vernier effect, a similar spectral response can be obtained from coupled optical structures.…”

Section: Introductionmentioning

confidence: 99%

Vernier effect using in-line highly coupled multicore fibers

Cuando-Espitia

Fuentes-Fuentes

Velázquez-Benítez

et al. 2021

Sci Rep

View full text Add to dashboard Cite

We demonstrate optical fiber sensors based on highly coupled multicore fibers operating with the optical Vernier effect. The sensors are constructed using a simple device incorporating single-mode fibers (SMFs) and a segment of a multicore fiber. In particular, we evaluated the performance of a sensor based on a seven-core fiber (SCF) spliced at both ends to conventional SMFs, yielding a versatile arrangement for realizing Vernier-based fiber sensors. The SMF–SCF–SMF device can be fabricated using standard splicing procedures and serve as a “building block” for both, reflection and transmission sensing configurations. As demonstrated with our experimental results, the Vernier arrangements can yield a ten-fold increase in sensitivity for temperature measurements compared to a conventional single SMF–SCF–SMF device, thereby confirming the enhanced sensitivity that can be attained with this optical effect. Furthermore, through theoretical analysis, we obtain the relevant parameters that must be optimized in order to achieve an optimal sensitivity for a specific application. Our findings thus provide the necessary guidelines for constructing Vernier-based sensors with all-fiber devices based on highly coupled multicore optical fibers, which constitutes an ideal framework to develop highly sensitive fiber sensors for different applications.

show abstract

“…In 2019, Liu et al proposed a Vernier effect strain sensor by cascading a SI and an MZI together, as shown in Figure 14 [ 76 ]. The SI comprised a length of PMF and served as the reference part.…”

Section: Configurations To Produce the Vernier Effectmentioning

confidence: 99%

“… Vernier effect fiber sensor based on hybrid configuration (SI and MZI) [ 76 ]. Reprinted with permission from Ref.…”

Section: Figurementioning

confidence: 99%

Advanced Fiber Sensors Based on the Vernier Effect

Chen

Zhao

Hao

et al. 2022

Sensors

View full text Add to dashboard Cite

For decades, optical fiber interferometers have been extensively studied and applied for their inherent advantages. With the rapid development of science and technology, fiber sensors with higher detection sensitivity are needed on many occasions. As an effective way to improve measurement sensitivity, Vernier effect fiber sensors have drawn great attention during the last decade. Similar to the Vernier caliper, the optical Vernier effect uses one interferometer as a fixed part of the Vernier scale and the other as a sliding part of the Vernier scale. This paper first illustrates the principle of the optical Vernier effect, then different configurations used to produce the Vernier effect are classified and discussed. Finally, the outlook for Vernier effect fiber sensors is presented.

show abstract

High-sensitivity strain sensor implemented by hybrid cascaded interferometers and the Vernier-effect

Cited by 57 publications

References 16 publications

Optical Vernier Effect: Recent Advances and Developments

Optical Vernier Effect: Recent Advances and Developments

Vernier effect using in-line highly coupled multicore fibers

Advanced Fiber Sensors Based on the Vernier Effect

Contact Info

Product

Resources

About