Thermal characterization of optical fibers using wavelength-sweeping interferometry

Perret, Luc; Pfeiffer, Pierre; Serio, Bruno; Twardowski, Patrice

doi:10.1364/ao.49.003601

Cited by 3 publications

(1 citation statement)

References 24 publications

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“…Moreover, increasing the number of fibers demands a better isolation and mechanical stability to avoid mode coupling and bending losses. It is well-known that fibers are very sensitive to temperature [27]: it modifies the refractive index, which changes the NA, and the fibers lengths and diameters, which changes the sensor geometry and thus the sensibility and the range. Temperature has also a non-negligible influence on the electronic parts of the sensor (source, photodiode and amplification circuit) [28].…”

Section: Sub-nanometric Resolution In Static Casementioning

confidence: 99%

Fiber optics sensor for sub-nanometric displacement and wide bandwidth systems

Perret¹,

Chassagne²,

Topçu³

et al. 2011

Sensors and Actuators A: Physical

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To cite this version:Luc Perret, Luc Chassagne, Suat Topsu, Pascal Ruaux, Barthélemy Cagneau, et al.. Fiber optics sensor for sub-nanometric displacement and wide bandwidth systems. Sensors and Actuators A: Physical , Elsevier, 2010, pp.189-193 , 165, 189-193 (2011). AbstractIn this paper, we report fiber optics sensor with sub-nanometric resolution and wide bandwidth. It relies on an increase of the reception fibers number and on low-noise electronics. Moreover, a reference channel has been implemented using a semi-reflective plate to eliminate the source fluctuations and the fiber sensor was isolated to limit external influence of temperature and pressure. Thus we achieve both a sub-nanometric resolution on a 400 ms integration time and a long-term drift as low as 40 nm.h -1 . The setup has been also adapted to high speed applications by increasing the bandwidth up to 38 kHz. It can display a 28 nm peak-to-peak limit of resolution on an aluminized piezoactuator. It has been successfully used to test the resonance frequency of a vibrating plate actuated by two highfrequency prototypes of piezoactuators. These improvements lead to low cost fibers optic sensors interesting for non-contact displacement measurements with high sensitivity.

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Section: Sub-nanometric Resolution In Static Casementioning

confidence: 99%

Fiber optics sensor for sub-nanometric displacement and wide bandwidth systems

Perret¹,

Chassagne²,

Topçu³

et al. 2011

Sensors and Actuators A: Physical

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A simple experimental method for measuring the thermal sensitivity of single-mode fibers

Bondza

Bengtsson

Horvath

et al. 2020

Review of Scientific Instruments

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We present a simple technique to experimentally determine the optical-path length change with temperature for optical single-mode fibers. Standard single-mode fibers act as natural low-finesse cavities, with the Fresnel reflection of the straight cleaved surfaces being ∼3%, for the laser light coupled to them. By measuring the intensity variations due to interference of light reflected from the fiber front and end surfaces, while ramping the ambient temperature, the thermal sensitivity of the optical-path length of the fiber can be derived. Light was generated by a narrow linewidth, low drift laser. With our fairly short test fibers, we found that it was possible to reach a relative precision of the temperature sensitivity, compared to a reference fiber, on the 0.4%–2% scale and an absolute precision of 2%–5%, with the potential to improve both by an order of magnitude. The results for single-acrylate, dual-acrylate, and copper- and aluminum-coated fibers are presented. Values are compared with analytic models and results from a finite element method simulation. With the aid of these measurements, a simple fiber-interferometer, which is insensitive to thermal drifts, could be constructed.

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Integration of an intensity-modulated optical fiber temperature sensor into ceramic coating obtained by wire flame thermal spray

Pfeiffer

Serio³

et al. 2015

SPIE Proceedings

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Thermal characterization of optical fibers using wavelength-sweeping interferometry

Cited by 3 publications

References 24 publications

Fiber optics sensor for sub-nanometric displacement and wide bandwidth systems

Fiber optics sensor for sub-nanometric displacement and wide bandwidth systems

A simple experimental method for measuring the thermal sensitivity of single-mode fibers

Integration of an intensity-modulated optical fiber temperature sensor into ceramic coating obtained by wire flame thermal spray

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