Single-mode solarization-free hollow-core fiber for ultraviolet pulse delivery

Yu, Fei; Cann, Maria; Brunton, Adam N.; Wadsworth, William J.; Knight, Jonathan C.

doi:10.1364/oe.26.010879

Cited by 74 publications

(41 citation statements)

References 28 publications

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“…3 as blue squares; a transmission spectra (T) is also shown for better visualization of the 343 nm and 355 nm wavelengths within the fiber transmission band. The measured loss value at 355 nm is lower than the values reported in [20] and [21] for similar wavelengths in the UV range.…”

Section: Resultscontrasting

confidence: 76%

“…Additionally, modified tubular lattice HC-PCFs with so-called conjoined [17] and nested tubes [18] was also demonstrated to offer loss values of 2 dB/km at 1512 nm and 1.3 dB/km at 1450 nm, respectively. For shorter wavelengths, the loss of tubular fibers are reported to achieve 80 dB/km at 532 nm [19], 130 dB/km at 300 nm [20], and 100 dB/km at 218 nm [21]. The progress made in IC fibers is such that, for wavelengths lower than 1 µm, the transmission loss is no longer limited by the cladding design but by the surface scattering loss (SSL) due to surface roughness which can result from capillary waves or instabilities during the fiber draw [16].…”

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confidence: 99%

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1-km Hollow-Core Fiber With Loss at the Silica Rayleigh Limit in the Green Spectral Region

Chafer¹,

Osório

Amrani³

et al. 2019

IEEE Photon. Technol. Lett.

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In this letter, we report on the fabrication of an Inhibited-Coupling guiding fiber with a cladding amorphous lattice of nine tubes exhibiting record loss of 13.8 dB/km in the green spectral region. The fiber has been drawn over a length of 1 km with high stability during the drawing process (outer diameter variation of ± 0.2%). To our knowledge, this is the first time that loss figures as low as the fundamental Rayleigh scattering limit of silica are reported for a hollow-core optical fiber in the green spectral range. Also, this is the first report on a tubular fiber draw over such a long length. Additionally, this is the lowest loss figure ever demonstrated in any kind of optical fibers in this spectral region. Index Terms-Fiber optics, photonic crystal fiber, hollow-core fiber. I. INTRODUCTION EDUCING the loss of optical fibers has been a major preoccupation since their advent and, therefore, motivates intense research on both solid-and hollow-core optical fibers. In addition to the great attention given to the near-and mid-infrared ranges-whose efforts allowed to attain attenuation levels as low as 0.14 dB/km around 1550 nm for conventional solid-core fibers [1]-, improvements on the fiber optics technology in the visible spectral region are still required for addressing the needs of a wide set of growing application fields, since the loss of solid-core fibers in the visible are much higher than the ones obtained in the infrared due to the greater influence of the Rayleigh scattering for shorter wavelengths. For example, attenuation values in the green spectral range are around 30 dB/km for commercial single-mode fibers and around 20 dB/km for endlessy single-mode photonic crystal fibers [2-4] optimized for the visible range, which are higher than the limit, 13 dB/km, set be Rayleigh scattering in bulk silica. These improvements are particularly important for applications in the green spectral range (GSR) since, for instance, lasers emitting in the GSR are often used in the context of photovoltaic solar microprocessing for scribing and cutting in the solar cell fabrication process [5]. Moreover, lasers emitting in the visible spectral region are increasingly important for biological applications such as cytometry, DNA sequencing and confocal microscopy. Hence, improvements on the transmission capabilities of optical fibers in the visible range would bring ease of use, precision amelioration and cost effectiveness to these applications and, therefore, are highly desirable.

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Section: Resultscontrasting

confidence: 76%

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confidence: 99%

1-km Hollow-Core Fiber With Loss at the Silica Rayleigh Limit in the Green Spectral Region

Chafer¹,

Osório

Amrani³

et al. 2019

IEEE Photon. Technol. Lett.

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“…Higher-order antiresonant bands are not broad enough in this wavelength range, so this requires to design a fiber core guiding in the fundamental band, which requires capillary tubes with a < 300 nm thickness in this spectral region [25]. Although challenging, tubular anti-resonant HCFs with such thin cladding tubes have been successfully fabricated [25][26][27]. Our targeted fiber design therefore follows the design rules deeply investigated and optimized in Ref.…”

Section: Fiber Design and Fabricationmentioning

confidence: 99%

Double clad tubular anti-resonant hollow core fiber for nonlinear microendoscopy

Kudlinski¹,

Cassez²,

Vanvincq³

et al. 2020

Opt. Express

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We report the fabrication and characterization of the first double clad tubular antiresonant hollow core fiber. It allows to deliver ultrashort pulses without temporal nor spectral distortions in the 700-1000 nm wavelength range and to efficiently collect scattered light in a high numerical aperture double clad. The output fiber mode is shaped with a silica microsphere generating a photonic nanojet, making it well suitable for nonlinear microendoscopy application. Additionally, we provide an open access software allowing to find optimal drawing parameters for the fabrication of tubular hollow core fibers.

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“…Over twenty years have passed since Cregan et al presented the first hollow-core optical fiber (HCF) with a microstructured cladding [1]. Remarkable optical features of HCFs [2][3][4] have resulted in their extensive experimental use, for example in telecommunications [5][6][7], gas and liquid spectroscopy [8][9][10][11][12][13], supercontinuum generation [14,15], high power optical beam delivery [16][17][18], transmission in the spectral regions unavailable for conventional fibers [19][20][21][22], biomedical applications [23,24], and many others. Although the overall scientific reach of both types of HCFs-namely hollow-core photonic bandgap and hollow-core antiresonant optical fibers (HC-PBFs and HC-ARFs, respectively)-has vastly exceeded that of conventional, step index fibers, their full potential is still to be discovered.…”

Section: Introductionmentioning

confidence: 99%

A Dual Hollow Core Antiresonant Optical Fiber Coupler Based on a Highly Birefringent Structure-Numerical Design and Analysis

Stawska

Popenda

2019

Fibers

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With the growing interest in hollow-core antiresonant fibers (HC-ARF), attributed to the development of their fabrication technology, the appearance of more sophisticated structures is understandable. One of the recently advancing concepts is that of dual hollow-core antiresonant fibers, which have the potential to be used as optical fiber couplers. In the following paper, a design of a dual hollow-core antiresonant fiber (DHC-ARF) acting as a polarization fiber coupler is presented. The structure is based on a highly birefringent hollow-core fiber design, which is proven to be a promising solution for the purpose of propagation of polarized signals. The design of an optimized DHC-ARF with asymmetrical cores is proposed, together with analysis of its essential coupling parameters, such as the extinction ratio, coupling length ratio, and coupling strength. The latter two for the x- and y-polarized signals were ~2 and 1, respectively, while the optical losses were below 0.3 dB/cm in the 1500–1700 nm transmission band.

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Single-mode solarization-free hollow-core fiber for ultraviolet pulse delivery

Cited by 74 publications

References 28 publications

1-km Hollow-Core Fiber With Loss at the Silica Rayleigh Limit in the Green Spectral Region

1-km Hollow-Core Fiber With Loss at the Silica Rayleigh Limit in the Green Spectral Region

Double clad tubular anti-resonant hollow core fiber for nonlinear microendoscopy

A Dual Hollow Core Antiresonant Optical Fiber Coupler Based on a Highly Birefringent Structure-Numerical Design and Analysis

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