[INVITED] Surface plasmon cavities on optical fiber end-facets for biomolecule and ultrasound detection

Yang, Tian; He, Xiaolong; Zhou, Xin; Zeng, Lei; Wang, Yalin; Yang, Jie; Cai, De; Chen, Sung Liang; Wang, Xueding

doi:10.1016/j.optlastec.2017.12.003

Cited by 27 publications

(13 citation statements)

References 75 publications

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“…We demonstrate in Supporting Information S1 that the second-order harmonic comes from the narrow width of the nanoslit, and no bandgap at k x = 0 exists in an array with w / p = 50%. The band-edge mode at 800 nm corresponds to a dark mode, whereas the other one at 825 nm being a bright mode, as analyzed in refs − . According to the generalized Bragg condition mλ laser ≈ 2 pn eff , where m is the Bragg order, λ laser is the lasing wavelength, and n eff is the effective index, our plasmonic array is essentially a second-order DFB cavity with m = 2, while the out-coupling of the SPR modes into the p -polarized photons is attributed to the first-order Fourier component of the array at a spatial frequency of 2π/ p . , As a comparison, we also calculated the band diagram of a first-order DFB structure using nanoslit arrays, which is shown in Supporting Information S2.…”

Section: Resultsmentioning

confidence: 88%

Surface-Emitting Surface Plasmon Polariton Laser in a Second-Order Distributed Feedback Defect Cavity

et al. 2019

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The coupling between photons and lattice plasmons in metallic nanostructure arrays makes them good candidates to build radiative surface plasmon polariton (SPP) lasers. We report lasing action from the defect state in a second-order distributed feedback SPP cavity. In this device, a silver nanoslit array confines the SPPs in its second-order bandgap, while a phase shift section in the array introduces a high-qualityfactor defect state for SPP lasing. At the same time, the fundamental order grating diffraction of the nanoslit array provides a high extraction efficiency from SPPs to photons. Using optical pumping, we demonstrate pulsed lasing at room temperature, with a collimated emission in the surface-normal direction and a high single-mode fiber coupling efficiency. Together with its compact two-dimensional geometry and lasing wavelength tunability, the proposed device is a promising candidate for small footprint and low-cost surface-emitting lasers.

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Section: Resultsmentioning

confidence: 88%

Surface-Emitting Surface Plasmon Polariton Laser in a Second-Order Distributed Feedback Defect Cavity

et al. 2019

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“…The development of specific probes can effectively detect and quantify the specific protein content in body fluids, which plays an important role in drug effectiveness evaluation and disease diagnosis [ 111 ]. However, in the actual application environment, both label-free and label-assisted technology are inevitably affected by biofouling [ 112 ].…”

Section: Biomedical Applications Of Zwitterionic Hydrogelsmentioning

confidence: 99%

Recent Advances in Zwitterionic Hydrogels: Preparation, Property, and Biomedical Application

Liu

Tang

et al. 2022

Gels

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Nonspecific protein adsorption impedes the sustainability of materials in biologically related applications. Such adsorption activates the immune system by quick identification of allogeneic materials and triggers a rejection, resulting in the rapid failure of implant materials and drugs. Antifouling materials have been rapidly developed in the past 20 years, from natural polysaccharides (such as dextran) to synthetic polymers (such as polyethylene glycol, PEG). However, recent studies have shown that traditional antifouling materials, including PEG, still fail to overcome the challenges of a complex human environment. Zwitterionic materials are a class of materials that contain both cationic and anionic groups, with their overall charge being neutral. Compared with PEG materials, zwitterionic materials have much stronger hydration, which is considered the most important factor for antifouling. Among zwitterionic materials, zwitterionic hydrogels have excellent structural stability and controllable regulation capabilities for various biomedical scenarios. Here, we first describe the mechanism and structure of zwitterionic materials. Following the preparation and property of zwitterionic hydrogels, recent advances in zwitterionic hydrogels in various biomedical applications are reviewed.

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“…Therefore, every alteration at the sensor surface, such as changing the RI, temperature, or the binding of molecules, results in the resonant wavelength(s) shifting. According to this principle, numerous optical fiber-based RI sensors for the quantitative analysis of chemical reactions and biological interactions have been demonstrated, based on arrays of metallic nanodisks, 87 nanodots, 86,113 nanoholes, 76,77,175,176,[244][245][246] nanoslits and nanogratings, 95,174,[247][248][249] nanopillars and nanorods, 250,251 nanorings, 89 nanotrimers, 252 and metal-dielectric nanocrystals. 88,112,121 For example, Jia et al 174 constructed plasmonic optical fibers by transferring patterned metal nanostructures onto optical fiber endfaces, which showed narrow linewidths (6.6 nm) and a high figure of merit (60.7).…”

Section: D Functional Surfacesmentioning

confidence: 99%

Multifunctional integration on optical fiber tips: challenges and opportunities

Xiong

2020

Adv. Photon.

133

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The flat endface of an optical fiber tip is an emerging light-coupled microscopic platform that combines fiber optics with planar micro-and nanotechnologies. Since different materials and structures are integrated onto the endfaces, optical fiber tip devices have miniature sizes, diverse integrated functions, and low insertion losses, making them suitable for all-optical networks. In recent decades, the increasing demand for multifunctional optical fibers has created opportunities to develop various structures on fiber tips. Meanwhile, the unconventional shape of optical fibers presents challenges involving the adaptation of standard planar micro-and nanostructure preparation strategies for fiber tips. In this context, researchers are committed to exploring and optimizing fiber tip manufacturing techniques, thereby paving the way for future integrated all-fiber devices with multifunctional applications. First, we present a broad overview of current fabrication technologies, classified as "top-down," "bottom-up," and "material transfer" methods, for patterning optical fiber tips. Next, we review typical structures integrated on fiber tips and their known and potential applications, categorized with respect to functional structure configurations, including "optical functionalization" and "electrical integration." Finally, we discuss the prospects for future opportunities involving multifunctional integrated fiber tips.

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[INVITED] Surface plasmon cavities on optical fiber end-facets for biomolecule and ultrasound detection

Cited by 27 publications

References 75 publications

Surface-Emitting Surface Plasmon Polariton Laser in a Second-Order Distributed Feedback Defect Cavity

Surface-Emitting Surface Plasmon Polariton Laser in a Second-Order Distributed Feedback Defect Cavity

Recent Advances in Zwitterionic Hydrogels: Preparation, Property, and Biomedical Application

Multifunctional integration on optical fiber tips: challenges and opportunities

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