Silica exposed-core microstructured optical fibers

Kostecki, Roman; Ebendorff-Heidepriem, Heike; Davis, Claire; McAdam, G.; Warren‐Smith, Stephen C.; Monro, Tanya M.

doi:10.1364/ome.2.001538

Cited by 78 publications

(64 citation statements)

References 47 publications

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“…It is typically fabricated by drilling holes along a silica rod [19] to form a suspended core fiber preform. One air hole of the preform is then cut or polished open, exposing the core to the surrounding medium on that side.…”

Section: Multimode Interference In Exposed Core Microstructured Opticmentioning

confidence: 99%

“…To solve this issue we have developed a special type of optical fiber called exposed-core microstructured optical fiber (ECF) [17][18][19]. Of its many advantageous characteristics compared with conventional microstructured optical fibers, the most distinctive one is that ECF can be spliced with standard SMFs to form all-fiber configuration [20], while the light propagating in the core still has direct contact with analyte suspended in the surrounding medium thanks to the exposed core.…”

Section: Introductionmentioning

confidence: 99%

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Interferometric-type optical biosensor based on exposed core microstructured optical fiber

Nguyen

Hill

Warren‐Smith

et al. 2015

Sensors and Actuators B: Chemical

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In all cases accepted manuscripts should:  link to the formal publication via its DOI  bear a CC-BY-NC-ND license -this is easy to do, click here to find out how  if aggregated with other manuscripts, for example in a repository or other site, be shared in alignment with our hosting policy  not be added to or enhanced in any way to appear more like, or to substitute for, the published journal article Abstract: This work presents a novel biosensor using the multimode interference effect in an exposed core microstructured optical fiber (ECF). In this work biotin molecules are immobilized onto the ECF core surface to serve as the capturing probe for streptavidin, the target molecules.Since each distinct guided mode in the ECF interacts with the surrounding medium differently, the interference between any two specific modes will experience a fringe shift (or phase change) upon a change in the refractive index (RI) of the surrounding medium, or a localized RI change on the surface of the ECF core as a result of a biological binding event. In our experiment, the interferometric sensing platform was realized by splicing a section of ECF with lead-in and leadout single mode fibers (SMFs). An interference pattern is obtained in the transmission spectrum as the result of multiple excited modes (excited and re-collected at the lead-in and lead-out splicing points) propagating in the ECF with different propagation constants. The interference pattern is non-uniform, indicating that there are more than two modes involved. Fast Fourier transform (FFT) is used to separate individual interference patterns that contribute to this complex spectrum and monitor their phase changes upon RI variation of the surrounding medium. In this way multiple RI sensitivities can be realized because each spatial frequency possesses a distinct sensitivity with respect to the surrounding RI. The operation of this device was validated by measuring the phase changes that occur when the sensing platform was subjected to solutions of different RIs or functionalized with different molecules. A biosensor was demonstrated based on this novel platform using biotin as the capturing probe to detect streptavidin with low non-specific adsorption. The proposed platform is reliable, cost-effective, and offers a potential label-free biosensing alternative to the widely used surface plasmon resonance (SPR) technique.

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Section: Multimode Interference In Exposed Core Microstructured Opticmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Interferometric-type optical biosensor based on exposed core microstructured optical fiber

Nguyen

Hill

Warren‐Smith

et al. 2015

Sensors and Actuators B: Chemical

View full text Add to dashboard Cite

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“…The impact of deterioration on the transmission properties of the functionalized fiber, resulting from exposing the functionalized fiber to air, was measured using the same procedure detailed in [1] which is briefly outlined here. A 4 m long PMMA+8-HQ functionalized fiber was coupled to a 100 W halogen broadband source with an approximately Gaussian-distributed intensity profile and peak power at 800 nm.…”

Section: Air Exposure Induced Deteriorationmentioning

confidence: 99%

“…Any changes over time (t) (1) where x is the loss in dB m 1 day 1 and z is the fiber length in meters. For comparison the result in [1] for an uncoated exposed-core MOF, with 10 µm core diameter, is shown by the red line in Fig. 3.…”

Section: Air Exposure Induced Deteriorationmentioning

confidence: 99%

“…Exposed-core microstructured optical fibers (MOFs) made from silica open up new opportunities for creating sensors capable of withstanding long term use in harsh environments and for providing real time analysis anywhere along the fiber length [1]. The portion of guided light extending from the glass core, often described as 'evanescent field', is affected by the refractive index and absorption characteristics of the medium surrounding it [2,3].…”

Section: Introductionmentioning

confidence: 99%

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Novel polymer functionalization method for exposed-core optical fiber

Kostecki

Ebendorff-Heidepriem

Afshar

et al. 2014

Opt. Mater. Express

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Scalable Functionalization of Optical Fibers Using Atomically Thin Semiconductors

et al. 2020

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The light-matter interaction length in monolayer transition metal dichalcogenides (TMD) [1,2] on planar substrates is restricted to sub-nanometers due to their miniscule thickness. Atomically thin transition metal dichalcogenides are highly promising for integrated optoelectronic and photonic systems due to their exciton-driven linear and nonlinear interactions with light. Integrating them into optical fibers yields novel opportunities in optical communication, remote sensing, and all-fiber optoelectronics. However, the scalable and reproducible deposition of high-quality monolayers on optical fibers is a challenge. Here, the chemical vapor deposition of monolayer MoS 2 and WS 2 crystals on the core of microstructured exposed-core optical fibers and their interaction with the fibers' guided modes are reported. Two distinct application possibilities of 2D-functionalized waveguides to exemplify their potential are demonstrated. First, the excitonic 2D material photoluminescence is simultaneously excited and collected with the fiber modes, opening a novel route to remote sensing. Then it is shown that third-harmonic generation is modified by the highly localized nonlinear polarization of the monolayers, yielding a new avenue to tailor nonlinear optical processes in fibers. It is anticipated that the results may lead to significant advances in optical-fiber-based technologies.

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Silica exposed-core microstructured optical fibers

Cited by 78 publications

References 47 publications

Interferometric-type optical biosensor based on exposed core microstructured optical fiber

Interferometric-type optical biosensor based on exposed core microstructured optical fiber

Novel polymer functionalization method for exposed-core optical fiber

Scalable Functionalization of Optical Fibers Using Atomically Thin Semiconductors

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