A5028390116- Photonic Crystal and Fiber Optics
- Optical Network Technologies
- Advanced Fiber Laser Technologies
- Advanced Fiber Optic Sensors
- Semiconductor Lasers and Optical Devices
- Photonic and Optical Devices
- Advanced Photonic Communication Systems
- Spectroscopy and Laser Applications
- Laser-Matter Interactions and Applications
- Quantum optics and atomic interactions
- Atomic and Subatomic Physics Research
- Advanced Optical Network Technologies
- Solid State Laser Technologies
- Optical Wireless Communication Technologies
- Polysaccharides and Plant Cell Walls
- Polysaccharides Composition and Applications
- Optical Systems and Laser Technology
- Photorefractive and Nonlinear Optics
- Rheology and Fluid Dynamics Studies
- Quantum Information and Cryptography
- Cold Atom Physics and Bose-Einstein Condensates
- Proteins in Food Systems
- Digital Holography and Microscopy
- Interconnection Networks and Systems
- Metamaterials and Metasurfaces Applications
Eindhoven University of Technology
2022-2025
University of Southampton
2015-2024
Czech Technical University in Prague
2021
Honeywell (United States)
2021
Centre National de la Recherche Scientifique
2012-2016
Université de Limoges
2012-2016
University of Bath
2010-2016
XLIM
2012-2014
University of Nottingham
1986-1989
For over 50 years, pure or doped silica glass optical fibres have been an unrivalled platform for the transmission of laser light and data at wavelengths from visible to near infra-red. Rayleigh scattering, arising frozen-in density fluctuations in glass, fundamentally limits minimum attenuation these hence restricts their application, especially shorter wavelengths. Guiding hollow (air) core offers a potential way overcome this insurmountable limit set by glass's but requires reduction all...
We report the first double-nested antiresonant hollow core fiber. The fiber matches loss of commercial solid fibers in C-band (0.174 dB/km) and fundamentally improves it (0.22 O-band.
We report on numerical and experimental studies showing the influence of arc curvature confinement loss in hypocycloid-core Kagome hollow-core photonic crystal fiber.The results prove that with such a design optical performances are strongly driven by contour negative core-cladding interface.They show increase strong decrease both power overlap between core mode silica core-surround, including modal content approaching true singlemode guidance.Fibers enhanced were then fabricated record...
We report an effectively single mode tubular antiresonant hollow core fiber with minimum loss of ~25 dB/km at ~1200 nm, and extremely wide low-loss transmission window (lower than 30 from 1000 to 1400 nm 6 dB bandwidth exceeding nm). Despite the relatively large field diameter 32 μm, can be interfaced SMF28 produce fully connectorized samples. Exploiting excellent modal purity arising differential low intermodal coupling, we demonstrate penalty-free 10G on-off keying data through 100 m...
We report an effectively single-moded, 1.7km long hollow core Nested Antiresonant Nodeless Fiber (NAOT) with record-low 0.28dB/km loss from 1510 to 1600nm, which further reduces the gap standard all-glass single mode fibers.
The fabrication of hollow core microstructured fibers is significantly more complex than solid due to the necessity control microstructure with high precision during draw.We present first model that can recreate tubular anti-resonant fiber draws, and accurately predict draw parameters geometry fiber.The was validated against two different experimental draws very good agreement found.We identify a dynamic within process lead premature irreversible contact between neighboring capillaries...
Resonator fiber optic gyroscope (RFOG) performance has hitherto been limited by nonlinearity, modal impurity, and backscattering in the sensing fibers. The use of hollow-core (HCF) effectively reduces but complex interplay among glass air-guided modes conventional HCF technologies can severely exacerbate RFOG instability. By employing high-performance nested anti-resonant nodeless fiber, we demonstrate long-term stability a hollow-fiber 0.05 deg/h, nearing levels required for civil aircraft...
Abstract We demonstrate halving the record-low loss of interconnection between a nested antiresonant nodeless type hollow-core fiber (NANF) and standard single-mode (SMF). The achieved 0.15 dB is only 0.07 above theoretically-expected minimum loss. also optimized in terms unwanted cross-coupling into higher-order modes NANF. as low −35 LP $$_{11}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mrow/> <mml:mn>11</mml:mn> </mml:msub> </mml:math> mode (the...
Using hollow-core NANFs with 5-nested-tubes, we achieve the lowest loss ever reported in a hollow core fiber at 1300 and 1625nm (0.22dB/km), any type of optical 850nm (0.6dB/km) 1060nm (0.3dB/km).
The elastic backscattering of light in optical fiber is a fundamental phenomenon that sets the ultimate performance several systems such as gyroscopes and bidirectional transfer links. Until now, efforts to reduce coefficient have yielded limited results, with lowest value sitting at around <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mo>−</mml:mo> </mml:mrow> <mml:mn>76</mml:mn> <mml:mspace width="thickmathspace"/>...
We report on the recent design and fabrication of kagome-type hollow-core photonic crystal fibers for purpose high-power ultrashort pulse transportation. The fabricated seven-cell three-ring hypocycloid-shaped large core fiber exhibits an up-to-date lowest attenuation (among all kagome fibers) 40 dB/km over a broadband transmission centered at 1500 nm. show that size, low attenuation, transmission, single-mode guidance, dispersion make it ideal host laser beam By filling with helium gas, 74...
We report a Nested Antiresonant Nodeless hollow-core Fiber (NANF) operating in the first antiresonant passband. The fiber has an ultrawide operational bandwidth of 700 nm, spanning 1240-1940 nm wavelength range that includes O-, S-, C- and L- telecoms bands. It minimum loss 6.6 dB/km at 1550 ≤7 between 1465-1655 ≤10 1297-1860 nm. By splicing together two structurally matched fibers by adding single mode (SMF) pigtails both ends we have produced ~1 km long span. concatenated connectorized...
We report fabrication of a Nested Antiresonant Nodeless hollow-core Fibre (NANF) with minimum loss 1.3dB/km at 1450nm and 65nm bandwidth below 1.5dB/km. The 0.5-km long fibre is effectively single moded shown capable data transmission.
Hollow-core optical fibers can offer broadband, single mode guidance in the UV-visible-NIR wavelength range, with potential for low-loss, solarization-free operation, making them desirable and potentially disruptive a wide range of applications. To achieve this requires fabrication <300nm anti-resonant membranes, which is technically challenging. Here we investigate underlying fluid dynamics fiber process demonstrate new three-stage approach, capable delivering long (∼350m) lengths...
Abstract We review the use of hollow-core photonic crystal fibre (HC-PCF) for high power laser beam delivery. A comparison bandgap HC-PCF with Kagome-lattice on geometry, guidance mechanism, and optical properties shows that Kagome-type is an ideal host transportation because its large core size, low attenuation, broadband transmission, single-mode guidance, dispersion ultra-low overlap between core-guided modes silica core-surround. The handling capability further experimentally...
We report on numerical and experimental studies the influence of cladding ring-number confinement bend loss in hypocycloid-shaped Kagome hollow core photonic crystal fiber.The results show that beyond second ring, ring number has a minor effect whereas is strongly reduced with ringnumber increase.Finally, increase improves modal content fiber.©2013 Optical Society America
We report on hypocycloid core shaped hollow-core Kagome fiber with a record loss of 70 dB/km at spectral range around 750–850 nm, which is compatible Cs and Rb based applications. The exhibits single mode operation in diameter as large <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex Notation="TeX">$40~ \mu{\rm m}$</tex></formula> , very low sensitivity to bend. show experimentally that the bending-loss limited by...
We report a hollow core Nested Antiresonant Nodeless Fibre (NANF) with loss of 0.65dB/km across the full C and L telecommunication bands. The fabricated fibre is 1.23km long, it effectively single moded over sufficiently long lengths, able to transmit data.
We successfully integrate coherent one-way QKD at 1538 nm in a 7.7 km long hollow-core fiber link with 17 EDFA-boosted C-band data channels from 1540.56 to 1558.17 nm, aggregating power of 11 dBm. operation proves successful despite the wideband layout classical channels.
We report the fabrication and characterization of Kagome hollow-core antiresonant fibers, which combine low attenuation (as measured at ∼30 cm bend diameter) with a wide operating bandwidth high modal purity.Record values are reported: 12.3 dB/km, 13.9 9.6 dB/km in three different fibers optimized for operation 1 μm, 1.55 2.5 respectively.These excellent candidates ultra-high power delivery key laser wavelengths including 1.064 μm 2.94 as well applications gas-based sensing nonlinear optics.