Results 81 to 90 of about 59,676 (341)

Modeling photonic crystal fibers

Advances in Applied Mathematics, 2006
AbstractWe study guidance of electromagnetic waves in photonic fibers. Both transverse magnetic and transverse electric polarizations are investigated. We characterize guided modes in the fiber as eigenfunctions of compact integral operators and prove their exponential decay in the cladding.
openaire   +2 more sources

Leakage properties of photonic crystal fibers

Optics Express, 2002
An analysis of the con.nement losses in photonic crystal fibers due to the finite numbers of air holes is performed by means of the finite element method. The high flexibility of the numerical method allows us to consider fibers with regular lattices, like the triangular and the honeycomb ones, and circular holes, but also fibers with more complicated ...
D. FERRARINI, VINCETTI, Luca, ZOBOLI, Maurizio, A. CUCINOTTA, S. SELLERI   +4 more
openaire   +3 more sources

Polarization-Tailored Raman Frequency Conversion in Chiral Gas-Filled Hollow Core Photonic Crystal Fibers

, 2019
Broadband-tunable sources of circularly-polarized light are crucial in fields such as laser science, biomedicine and spectroscopy. Conventional sources rely on nonlinear wavelength conversion and polarization control using standard optical components ...
Chen, Y., Davtyan, S., Frosz, M. H., Novoa, D., Russell, P. St. J.   +4 more
core   +1 more source

Characterization of 1D photonic crystal nanobeam cavities using curved microfiber [PDF]

, 2010
We investigate high-Q, small mode volume photonic crystal nanobeam cavities using a curved, tapered optical microfiber loop. The strength of the coupling between the cavity and the microfiber loop is shown to depend on the contact position on the ...
Gehl, M., Gibbs, H. M., Gibson, R., Hendrickson, J., Homyk, A., Khankhoje, U. K., Khitrova, G., Kieu, K., Kim, J. -Y., Lee, Y. -H., Olitzky, J. D., Richards, B. C., Scherer, A.   +12 more
core   +2 more sources

Emerging 2D Materials and Their Hybrid Nanostructures for Label‐Free Optical Biosensing: Recent Progress and Outlook

Advanced Functional Materials, EarlyView.
This review highlights recent advances in label‐free optical biosensors based on 2D materials and rationally designed mixed‐dimensional nanohybrids, emphasizing their synergistic effects and novel functionalities. It also discusses multifunctional sensing platforms and the integration of machine learning for intelligent data analysis.
Xinyi Li, Yonghao Fu, Yuehe Lin, Dan Du
wiley   +1 more source

Photonic Crystal Fiber in Photonic Crystal Fiber for Residual Dispersion Compensation Over ${\rm E} + {\rm S} + {\rm C} + {\rm L} + {\rm U}$ Wavelength Bands

IEEE Photonics Journal, 2013
A photonic crystal fiber in photonic crystal fiber (PCF-in-PCF) architecture is numerically investigated for residual dispersion compensation in optical transmission link. The optimized structure shows a flattened and high average dispersion of -457.4 ps/
D. C. Tee, M. H. Abu Bakar, N. Tamchek, F. R. Mahamd Adikan   +3 more
doaj   +1 more source

Avoided crossings in photonic crystal fibers

Optics Express, 2011
The impact of avoided crossings (also known as anti-crossings) in single and double-clad large mode area Photonic Crystal Fibers (PCFs) suitable for high-power laser systems is evaluated numerically. It is pointed out that an inappropriate choice of pump core diameter, bending radius and/or index depression may lead to avoided crossings that manifest ...
Florian Jansen, Fabian Stutzki, Cesar Jauregui, Jens Limpert, and AndreasTünnermann   +4 more
openaire   +3 more sources

Frequency tunability of solid-core photonic crystal fibers filled with nanoparticle-doped liquid crystals [PDF]

, 2009
We infiltrate liquid crystals doped with BaTiO3 nanoparticles in a photonic crystal fiber and compare the measured transmission spectrum with the one achieved without dopant.
Alkeskjold, Anders Bjarklev, Du, Eggleton, Gauza, Gauza, Haakestad, Haiqing Xianyu, Kaczmarek, Kerbage, Kiely, Kobayashi, Kundu, Lara Scolari, Lars Eskildsen, Larsen, Lei Zhai, Li, Litchinitser, Noordegraaf, Noordegraaf, Reznikov, Russell, Scolari, Scolari, Sebastian Gauza, Shin–Tson Wu, Shiraishi, Thomas T. Alkeskjold, Wolinski, Wolinski, Wolinski, Wu, Wu, Zografopoulos   +34 more
core   +3 more sources

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

Advanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva, Giulio Fatti, Emanuel Carlos, Guilherme Ferreira, Sumita Goswami, Suman Nandy, Luiz H. C. Mattoso, Elvira Fortunato, Caio G. Otoni, Rodrigo Martins   +9 more
wiley   +1 more source

Hollow-Core Photonic Crystal Fibers for Surface-Enhanced Raman Scattering Probes

International Journal of Optics, 2011
Photonic crystal fiber (PCF) sensors based on surface-enhanced Raman scattering (SERS) have become increasingly attractive in chemical and biological detections due to the molecular specificity, high sensitivity, and flexibility. In this paper, we review
Xuan Yang, Chao Shi, Rebecca Newhouse, Jin Z. Zhang, Claire Gu   +4 more
doaj   +1 more source