Large-mode-area single-mode-output Neodymium-doped silicate glass all-solid photonic crystal fiber

Li, Wentao; Chen, Danping; Zhou, Qinling; Hu, Lili

doi:10.1038/srep12547

Cited by 14 publications

(5 citation statements)

References 18 publications

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“…The spatially complex structure of English landscapes and the creation of flower rich habitats under the agri-environment schemes may mean that a sufficient continuity of foraging resources do exist that allow wild bees to benefit from the short flowering period of oilseed rape. Ultimately, the intensive nature of oilseed rape crop management, in particular its dependence on insecticides, means that its value as a foraging resource for wild bees may be outweighed by the management required to ensure crop yields 32 . However, it may be possible to cultivate oil-seed rape without extensive use of neonicotinoids: a recent UK based analysis demonstrated that on average neonicotinoid seed treatments do not boost farmer profits 32 .…”

Section: Resultsmentioning

confidence: 99%

“…Ultimately, the intensive nature of oilseed rape crop management, in particular its dependence on insecticides, means that its value as a foraging resource for wild bees may be outweighed by the management required to ensure crop yields 32 . However, it may be possible to cultivate oil-seed rape without extensive use of neonicotinoids: a recent UK based analysis demonstrated that on average neonicotinoid seed treatments do not boost farmer profits 32 .…”

Section: Resultsmentioning

confidence: 99%

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Impacts of neonicotinoid use on long-term population changes in wild bees in England

et al. 2016

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Wild bee declines have been ascribed in part to neonicotinoid insecticides. While short-term laboratory studies on commercially bred species (principally honeybees and bumblebees) have identified sub-lethal effects, there is no strong evidence linking these insecticides to losses of the majority of wild bee species. We relate 18 years of UK national wild bee distribution data for 62 species to amounts of neonicotinoid use in oilseed rape. Using a multi-species dynamic Bayesian occupancy analysis, we find evidence of increased population extinction rates in response to neonicotinoid seed treatment use on oilseed rape. Species foraging on oilseed rape benefit from the cover of this crop, but were on average three times more negatively affected by exposure to neonicotinoids than non-crop foragers. Our results suggest that sub-lethal effects of neonicotinoids could scale up to cause losses of bee biodiversity. Restrictions on neonicotinoid use may reduce population declines.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Impacts of neonicotinoid use on long-term population changes in wild bees in England

et al. 2016

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“…Compared to solid-core fibers, HCFs with guiding of light in an air core (ideally in a vacuum) have been extremely more appealing since their first realization in 1999 [52] because of their lower Rayleigh scattering, lower nonlinearity, lower transmission loss, and higher laser damage threshold in air holes. [135][136][137][138][139][140][141][142][143][144][145][146][147] In 2018, an antiresonant HCF transmitted a high-power laser of up to ≈45 W average power. [148] In 2020, a nested antiresonant nodeless fiber was demonstrated to achieve the current record loss of ≈0.28 dB km −1 at 1550 nm, while its theoretical loss limit is less than 0.1 dB km −1 , lower than that of the standard singlemode fiber.…”

Section: The Progress In Optical Fibersmentioning

confidence: 99%

The Rise of Graphene Photonic Crystal Fibers

Zhou

Deng

et al. 2022

Adv Funct Materials

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2D graphene with tremendous novel properties is an ideal material for optical and optoelectronic applications. Meanwhile, photonic crystal fibers (PCFs) have been recognized as next-generation optical fibers that possess a designable porous structure, rich functions, and different working mechanisms. Recently, the integration of graphene with a PCF has formed a new hybrid fiber, a graphene photonic crystal fiber (Gr-PCF), which exhibits an extremely strong and tunable light-matter interaction across a broadband spectrum range and opens up a new interdisciplinary research direction. In this review, recent studies on, and achievements in graphene-traditional fibers and Gr-PCFs have been summarized from the aspects of the development process, preparation method, and device application. First, the graphene properties and the development and characteristics of PCFs are introduced. The discussion is continued with the existing fabrication technologies for hybrid graphene-traditional fibers. Next, the chemical vapor deposition method for Gr-PCFs is elaborated. Then, fiber devices based on graphene-traditional fibers, Gr-PCFs, and other 2D material fibers are presented. To conclude, challenges and perspectives are presented to encourage advanced Gr-PCF study.

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“…Burada, lazer kaynağından gelen ışık, bir polarizör denetleyicisi aracılığıyla önerilen algılayıcıya doğrusal olarak polarize bir şekilde, Ref. [30]'un makalesinde gösterildiği gibi temel modda yayınım yapması sağlanabilmektedir. Algılayıcıda oluşan rezonans durumu, optik spektrum analizörü (OSA) tarafından tespit edilir ve veriler, bilgisayar tarafından analiz edilir.…”

Section: Sayısal Modellemeunclassified

Pie-shaped photonic crystal fiber based surface plasmon resonance sensor for multi-analyte sensing purposes

Yaslı¹,

Ademgil²

2022

Pamukkale J Eng Sci

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Bu çalışmada çoklu-analit algılama amacıyla, çift analit kanallı, fotonik kristal fiber (FKF) tabanlı yüzey plazmon rezonans (YPR) algılayıcı tasarlanmıştır. Plazmonik materyal olarak altın ve gümüş kullanılmıştır. Sayısal analizler Tam Vektörel-Sonlu Öge Yöntemi (TV-SÖY) kullanılarak yapılmıştır, ayrıca tasarlanan algılayıcı duyarlılık hesapları için spektral yöntemi kullanılmıştır. Sayısal analizler sonucu, en yüksek 6800 nm/RIU duyarlılığa ve 1.47x10-5 RIU çözünürlüğe ulaşılırken, sabit ve değişken analit kırılma indisleri için sırasıyla 3500 nm/RIU ve 3100 nm/RIU duyarlılık seviyelerine ulaşılmıştır.In this study, the dual-channel photonic crystal fibre (PCF) based surface plasmon resonance (SPR) sensor has been proposed to sense multi-analyte. Gold and silver used as plasmonic layers. Full vectorial Finite Element Method (FV-FEM) have been used to perform numerical analysis. Also, the spectral interrogation method has been used to calculate the sensitivity of the proposed sensor structure. According to numerical results, the highest sensitivity levels are obtained as 6800 nm/RIU with 1.47x10−5 RIU, where the average sensitivities are calculated as 3500 nm/RIU and 3100 nm/RIU for fixed and variable refractive indices, respectively.

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Large-mode-area single-mode-output Neodymium-doped silicate glass all-solid photonic crystal fiber

Cited by 14 publications

References 18 publications

Impacts of neonicotinoid use on long-term population changes in wild bees in England

Impacts of neonicotinoid use on long-term population changes in wild bees in England

The Rise of Graphene Photonic Crystal Fibers

Pie-shaped photonic crystal fiber based surface plasmon resonance sensor for multi-analyte sensing purposes

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