Micro-drilled optical fiber for enhanced laser strain sensors

Herrera, Rosa Ana Pérez; Bravo, M.; Roldán-Varona, Pablo; Leandro, Daniel; Cobo, Luis Rodríguez; López‐Higuera, J. M.; Lopez-Amo, M.

doi:10.1117/12.2539802

Cited by 4 publications

(4 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As can be seen, both cases show a strong linear trend with sensitivities of 9.7 and 10.2 pm/°C, for C-and L-band in that order. These results are also in agreement with previous studies and comparable to the values attained for commercial fiber Bragg gratings operating in this spectral range, which is around 11 pm/°C [25]. Finally, the reflector was introduced into a custom-built station designed for strain measurements.…”

Section: Temperature and Strain Sensingsupporting

confidence: 91%

See 1 more Smart Citation

High Performance Fiber Laser Resonator for Dual Band (C and L) Sensing

Sanchez-Gonzalez

Pérez-Herrera

Roldán-Varona

et al. 2022

J. Lightwave Technol.

Self Cite

View full text Add to dashboard Cite

This work presents an experimental analysis and comparison of the performance of quasi-randomly distributed reflectors inscribed into a single-mode fiber as a sensing mirror both in C-and L-band. Single-wavelength emission has been obtained in either band when using these artificially controlled backscattering fiber reflectors in a ring-cavity fiber laser. Singlelongitudinal mode operation with an optical signal to noise ratio (OSNR) of 47 dB and an output power instability as low as 0.04 dB have been measured when employing a C-band optical amplifier. When replaced by an L-band optical amplifier, a singlelongitudinal mode behavior has also been obtained, showing an OSNR of 44 dB and an output power instability of 0.09 dB. Regarding their performance as fiber-laser sensing systems, very similar temperature and strain sensitivities have been obtained in both bands, comparable to fiber Bragg grating sensors in the case of temperature and one order of magnitude higher in the case of strain variations.

show abstract

Section: Temperature and Strain Sensingsupporting

confidence: 91%

“…The enhancement in both laser emission and sensing applications using an ACBFR has already been discussed in previous works [25]. However, the inscription parameters originally designed for emission around 1550 nm were considerably modified to adapt the structure to this new multiband application.…”

Section: A C-band Laser Generation Propertiesmentioning

confidence: 99%

High Performance Fiber Laser Resonator for Dual Band (C and L) Sensing

Sanchez-Gonzalez

Pérez-Herrera

Roldán-Varona

et al. 2022

J. Lightwave Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…By using femtosecond laser technology, dots with a pseudo-random pitch have been inscribed in a single-mode fiber. With this approach, a quasi-randomly distributed reflector (working as a sensing mirror) in a short-cavity fiber optic laser sensor has been reported [160,161]. A better sensitivity for the measurement of strain than regular FBG transducers has been offered by this fiber laser sensor.…”

Section: Scattering Dotsmentioning

confidence: 99%

Optical Fiber Sensors by Direct Laser Processing: A Review

Pallarés-Aldeiturriaga

Roldán-Varona

Rodŕıguez-Cobo

et al. 2020

Sensors

View full text Add to dashboard Cite

The consolidation of laser micro/nano processing technologies has led to a continuous increase in the complexity of optical fiber sensors. This new avenue offers novel possibilities for advanced sensing in a wide set of application sectors and, especially in the industrial and medical fields. In this review, the most important transducing structures carried out by laser processing in optical fiber are shown. The work covers different types of fiber Bragg gratings with an emphasis in the direct-write technique and their most interesting inscription configurations. Along with gratings, cladding waveguide structures in optical fibers have reached notable importance in the development of new optical fiber transducers. That is why a detailed study is made of the different laser inscription configurations that can be adopted, as well as their current applications. Microcavities manufactured in optical fibers can be used as both optical transducer and hybrid structure to reach advanced soft-matter optical sensing approaches based on optofluidic concepts. These in-fiber cavities manufactured by femtosecond laser irradiation followed by chemical etching are promising tools for biophotonic devices. Finally, the enhanced Rayleigh backscattering fibers by femtosecond laser dots inscription are also discussed, as a consequence of the new sensing possibilities they enable.

show abstract

“…In this work we demonstrate how to use the current micro-drilling techniques, also used for FBGs writing [7], to develop more sensitive sensing structures. A preliminary study of a micro-drilled SMF fiber reflector for laser sensors was recently presented in [8]. Now in order to complete the study, we have compared two different kind of quasi-randomly distributed reflectors.…”

Section: Introductionmentioning

confidence: 99%