Colossal Enhancement of Strain Sensitivity Using the Push-Pull Deformation Method

Robalinho, Paulo; Gomes, André D.; Frazão, Orlando

doi:10.1109/jsen.2020.3033581

Cited by 12 publications

(6 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hence, the proposed concept is a way to overcome the limitations of the fundamental effect, allowing the reaching of new M-factors enhanced by (i + 1) times. The use of such effect has already demonstrated capabilities of reaching new records of sensitivity, for instance in strain sensitivity (10 000 pm µ𝜖 −1 ), as reported by Robalinho et al [73] Moreover, nonconventional interferometers combined with optical harmonics of the Vernier effect are also presently being studied, aiming to employ this effect for more specific applications, such as the development of nano-displacement sensors. [74,75] There is still quite some space for further improvements and developments in this area.…”

Section: Final Remarksmentioning

confidence: 89%

“…The use of such effect has already demonstrated capabilities of reaching new records of sensitivity, for instance in strain sensitivity (10 000 pm µε −1 ), as reported by Robalinho et al. [ 73 ] Moreover, non‐conventional interferometers combined with optical harmonics of the Vernier effect are also presently being studied, aiming to employ this effect for more specific applications, such as the development of nano‐displacement sensors. [ 74,75 ]…”

Section: Final Remarksmentioning

confidence: 99%

See 1 more Smart Citation

Optical Vernier Effect: Recent Advances and Developments

Gomes

Bartelt

Frazão

2021

Laser & Photonics Reviews

Self Cite

188

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: Final Remarksmentioning

confidence: 89%

Section: Final Remarksmentioning

confidence: 99%

Optical Vernier Effect: Recent Advances and Developments

Gomes

Bartelt

Frazão

2021

Laser & Photonics Reviews

Self Cite

188

View full text Add to dashboard Cite

show abstract

“…In Fig. 4 it was observed the beat phenomenon, predicted by [7], for 0.5 Hz. When using low frequencies, the beat is generated between two cavities and the resulting modulation of the cavity variation is observed.…”

Section: Frequency Modulation Of the Correlation Signal Between Two C...mentioning

confidence: 61%

The effect of frequency modulation on the FSR of a Fabry-Perot cavity using an Optical Spectrum Analyser

et al. 2022

View full text Add to dashboard Cite

It is presented a study of the dependence between the free spectral range (FSR) and the cavity length in Fabry-Perot interferometers. Furthermore, the effect of frequency modulation on the FSR is studied when an optical spectrum analyser (OSA) is used as an interrogator. For low frequency range it is possible to observe this behaviour in the OSA and using an appropriate processing signal it is possible to use the white light interferometry technique.

show abstract

“…Thus arises the application of the push-pull method in interferometry, allowing symmetrical variations of two equal interferometers. This results in two sensors with symmetric sensitivities allowing the maximization of the enhanced Vernier effect [15].…”

Section: Methodsmentioning

confidence: 99%

“…For a narrow range, the application of surface plasmon resonance (SPR) with a sensitivity of 10.32 nm/µm for a micrometric range [13] and a sensitivity of 31.45 nm/nm for a nanometric range [14] stand out. Recently a new strain sensor architecture based on a push-pull deformation method was reported [15].…”

Section: Introductionmentioning

confidence: 99%

Giant Displacement Sensitivity Using Push-Pull Method in Interferometry

Robalinho

Frazão

2021

Photonics

Self Cite

View full text Add to dashboard Cite

We present a giant sensitivity displacement sensor combining the push-pull method and enhanced Vernier effect. The displacement sensor consists in two interferometers that are composed by two cleaved standard optical fibers coupled by a 3 dB coupler and combined with a double-sided mirror. The push pull-method is applied to the mirror creating a symmetrical change to the length of each interferometer. Furthermore, we demonstrate that the Vernier effect has a maximum sensitivity of two-fold that obtained with a single interferometer. The combination of the push-pull method and the Vernier effect in the displacement sensors allows a sensitivity of 60 ± 1 nm/μm when compared with a single interferometer working in the same free spectral range. In addition, exploring the maximum performance of the displacement sensors, a sensitivity of 254 ± 6 nm/μm is achieved, presenting a M-factor of 1071 and MVernier of 1.9 corresponding to a resolution of 79 pm. This new solution allows the implementation of giant-sensitive displacement measurement for a wide range of applications.

show abstract

Colossal Enhancement of Strain Sensitivity Using the Push-Pull Deformation Method

Cited by 12 publications

References 31 publications

Optical Vernier Effect: Recent Advances and Developments

Optical Vernier Effect: Recent Advances and Developments

The effect of frequency modulation on the FSR of a Fabry-Perot cavity using an Optical Spectrum Analyser

Giant Displacement Sensitivity Using Push-Pull Method in Interferometry

Contact Info

Product

Resources

About