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November/ December 2024

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High-performance SPR sensor schematic for salivary cortisol detection. The sensor structure shows a ZBLAN fluoride glass core fiber coated with a Bi1.5Sb0.5Te1.8Se1.2 (BSTS) topological insulator layer, a metallic (Ag) layer, and a silica (SiO2) cladding. Cortisol molecules are shown binding to the surface. Key results include an enhanced figure of merit of 20.83 RIU⁻¹ and an exceptional limit of detection of 0.54 fg/mL.

Evaluating Different Fluoride Glass Fibers and Topological Insulator BSTS Impact on Cortisol Sensing Utilizing SPR Sensor

Photonics Journal
Breakthrough in cortisol detection! Fluoride glass fibers and topological insulators in surface plasmon resonance sensors deliver unparalleled sensitivity, with exceptionally low ‘limit of detection’. A game-changer for stress and health monitoring.
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This content describes a new thermal emitter chip technology. The chip uses a layered structure, anchored by a Silicon substrate, which includes a Hard mask, a Heater layer, an Aluminum electrode, and the key innovation: a Metallic Nanotube Array (MeNTA) made of stainless steel. This device is designed to improve the efficiency and applicability of far-infrared light sources, particularly for biomedical uses.

Metallic Nanotube Array Enabling Far Infrared Thermal Emitter Performance Enhancement

Photonics Journal
Metallic nanotube arrays redefine far-infrared thermal emitters, enhancing luminous efficiency and focusing emissions for biomedical and industrial applications.
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A futuristic, neon-purple and green graphic depicting two large data centers connected by a fiber optic link. Text labels highlight "112.8 Tb/s real-time transmission" and "16.95 THz triple-band WDM configuration," illustrating high-speed data flow in an ultra-wideband wavelength division multiplexing system.

Triple-Band WDM Transmission Beyond 100-Tb/s Capacity with 1-Tb/s/λ-class Digital Coherent Channels

Journal of Lightwave Technology
Discover triple-band wavelength division multiplexing technology that enables data transmission beyond 100 Tb/s using digital coherent channels. Unlock unparalleled bandwidth for next-gen networks.
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Infographic details the development of a Novel Digital-Hologram Microscope (DHM) design that significantly improves spatial resolution. The key innovation is the use of a Liquid Crystal Phase Modulator. The process works by applying an electric field to the modulator, which implements a four-step phase shifting scheme. This shift results in a fourfold (4X) improvement in the spatial resolution of reconstructed images, as demonstrated against the 1951 USAF resolution target, when compared to a traditional polarized camera-based DHM system. Potential applications for this enhanced DHM technology include fields such as semiconductors, advanced display technology, and bio-imaging.

Development of a Spatial Resolution-Enhanced Digital-Hologram Microscope with a Liquid Crystal Phase Modulator (PJ)

Photonics Journal
Enhanced spatial resolution digital hologram microscopy with liquid crystal phase modulators exhibits 4x higher resolution than conventional systems—promising for bio-imaging and semiconductor technology.
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Research News Stories

Two-Dimensional Coupled Wave Theory for Triangular Lattice TM-polarised Photonic Crystal Surface Emitting Lasers (JSTQE)

Two-Dimensional Coupled Wave Theory for Triangular Lattice TM-polarised Photonic Crystal Surface Emitting Lasers (JSTQE)

Journal of Selected Topics in Quantum Electronics
Photonic crystal surface-emitting lasers or PCSELs are laser diodes that generate laser beams through controlled light wave interaction within a photonic crystal structure. In a recent study, researchers developed a method to study the two-dimensional interaction of light waves in PCSELs and measure their efficiency. The findings suggest that triangular-lattice PCSELs may be more efficient at converting electricity into laser light compared to square-lattice PCSELs, providing mathematical modelling tools for designing efficient laser diodes.
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Video Shorts

High-speed multi-gas sensing with a broadband Fourier domain mode-locked laser

High-speed multi-gas sensing with a broadband Fourier domain mode-locked laser

Journal of Lightwave Technology
Revolutionizing multi-gas sensing! High-speed Fourier domain mode-locked lasers enable the simultaneous detection of four gases with unmatched precision—perfect for environmental monitoring and industrial safety.
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