Low-loss micro-machining of anti-resonant hollow-core fiber with focused ion beam for optofluidic application

Adamu, Abubakar I.; Wang, Yazhou; Correa, Rodrigo Amezcua; Bang, Ole; Markos, Christos

doi:10.1364/ome.412299

Cited by 18 publications

(13 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 5f conducts a proof-of-concept experiment of Raman spectroscopy using ethanol, which provides an original idea for noninvasive biochemical analysis [63]. In contrast to Figure 5e-g principally proposes a low-loss micro-machining method for optofluidic applications [64]. They exploit the focused ion beam to mill the cladding of AR-HCFs, and no additional loss is generated in the whole process.…”

Section: Versatile Platform Based Sensing Applicationsmentioning

confidence: 99%

Recent Advancement of Anti-Resonant Hollow-Core Fibers for Sensing Applications

Yang

Luo

et al. 2021

Photonics

View full text Add to dashboard Cite

Specialty fibers have enabled a wide range of sensing applications. Particularly, with the recent advancement of anti-resonant effects, specialty fibers with hollow structures offer a unique sensing platform to achieve highly accurate and ultra-compact fiber optic sensors with large measurement ranges. This review presents an overview of recent progress in anti-resonant hollow-core fibers for sensing applications. Both regular and irregular-shaped fibers and their performance in various sensing scenarios are summarized. Finally, the challenges and possible solutions are briefly presented with some perspectives toward the future development of anti-resonant hollow-core fibers for advanced sensing.

show abstract

Section: Versatile Platform Based Sensing Applicationsmentioning

confidence: 99%

Recent Advancement of Anti-Resonant Hollow-Core Fibers for Sensing Applications

Yang

Luo

et al. 2021

Photonics

View full text Add to dashboard Cite

show abstract

“…For example, for the 25 microchannels made with the F-theta lens, the loss was 15.49 dB, while for the aspherical lens it was only 0.17 dB. Based on theoretical calculations presented in [21][22][23], the introduction of lateral cuts in the outer cladding of the nodeless ARHCF should not lead to significant transmission deterioration since the outer cladding does not participate directly in guiding the light inside the core. To investigate the cause of the increase in loss, a detailed analysis of the fabricated microchannels was carried out.…”

Section: Influence Of Laser Microchannel Processing On the Arhcf Transmission Characteristicmentioning

confidence: 99%

“…The developed process does not affect the cladding capillaries that define the low-loss guidance properties of this particular fiber. Such a modification in the outer structure of the ARHFC fiber, as shown in the literature [21][22][23], should not introduce additional transmission losses since the outer cladding has a negligible impact on the light confinement in the air core. With a properly optimized laser-micromachining process, the gap between the capillaries can be used to directly access the hollow region of the microstructured fiber.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Microchannels in a Nodeless Antiresonant Hollow-Core Fiber Using Femtosecond Laser Pulses

Kozioł

Jaworski

Krzempek

et al. 2021

Sensors

View full text Add to dashboard Cite

In this work, we present femtosecond laser cutting of microchannels in a nodeless antiresonant hollow-core fiber (ARHCF). Due to its ability to guide light in an air core combined with exceptional light-guiding properties, an ARHCF with a relatively non-complex structure has a high application potential for laser-based gas detection. To improve the gas flow into the fiber core, a series of 250 × 30 µm microchannels were reproducibly fabricated in the outer cladding of the ARHCF directly above the gap between the cladding capillaries using a femtosecond laser. The execution time of a single lateral cut for optimal process parameters was 7 min. It has been experimentally shown that the implementation of 25 microchannels introduces low transmission losses of 0.17 dB (<0.01 dB per single microchannel). The flexibility of the process in terms of the length of the performed microchannel was experimentally demonstrated, which confirms the usefulness of the proposed method. Furthermore, the performed experiments have indicated that the maximum bending radius for the ARHCF, with the processed 100 µm long microchannel that did not introduce its breaking, is 15 cm.

show abstract

“…Among the category of the PCFs, hollow core PCFs (HC-PCFs) can be highlighted, which have attracted great interest due to their aptitude on guiding light with relatively low-loss [ 2 , 4 ]. The recent breakthrough of the antiresonant hollow core fiber (ARHCF), a new category of HC-PCF, allowed not only to overcome several difficulties in the telecommunication area, but also to fully exploit the resonance behavior in new sensing applications, specifically in the optofluidics area [ 4 , 5 , 6 ] and in the biomedical and biochemical fields [ 4 , 7 , 8 ]. The ARHCF, whose light guidance relies on the principle of antiresonant reflecting optical waveguide (ARROW) [ 9 , 10 ], has been subject of scrutiny due to the numerous advantages it holds, such as ultralow loss and dispersion [ 4 , 11 , 12 , 13 , 14 ], reduced nonlinearities [ 13 , 15 ], ultrashort pulse delivery [ 13 , 16 , 17 , 18 ], and a broad bandwidth [ 11 , 12 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Double Antiresonance Fiber Sensor for the Simultaneous Measurement of Curvature and Temperature

Pereira

Bierlich

Kobelke

et al. 2021

Sensors

View full text Add to dashboard Cite

Antiresonant hollow core fibers (ARHCFs) have gained some attention due to their notoriously attractive characteristics on managing optical properties. In this work, an inline optical fiber sensor based on a hollow square core fiber (HSCF) is proposed. The sensor presents double antiresonance (AR), namely an internal AR and an external AR. The sensor was designed in a transmission configuration, where the sensing head was spliced between two single mode fibers (SMFs). A simulation was carried out to predict the behaviors of both resonances, and revealed a good agreement with the experimental observations and the theoretical model. The HSCF sensor presented curvature sensitivities of −0.22 nm/m−1 and −0.90 nm/m−1, in a curvature range of 0 m−1 to 1.87 m−1, and temperature sensitivities of 21.7 pm/°C and 16.6 pm/°C, in a temperature range of 50 °C to 500 °C, regarding the external resonance and internal resonance, respectively. The proposed sensor is promising for the implementation of several applications where simultaneous measurement of curvature and temperature are required.

show abstract

Low-loss micro-machining of anti-resonant hollow-core fiber with focused ion beam for optofluidic application

Cited by 18 publications

References 30 publications

Recent Advancement of Anti-Resonant Hollow-Core Fibers for Sensing Applications

Recent Advancement of Anti-Resonant Hollow-Core Fibers for Sensing Applications

Fabrication of Microchannels in a Nodeless Antiresonant Hollow-Core Fiber Using Femtosecond Laser Pulses

Double Antiresonance Fiber Sensor for the Simultaneous Measurement of Curvature and Temperature

Contact Info

Product

Resources

About