Simulation study on supercontinuum broadening based on the BIC model: publisher's note.

This publisher's note reports corrections to Appl. Opt.63, 8851 (2024)APOPAI0003-693510.

Multifunctional N-doped carbon dot- polyvinyl alcohol composite film/label enables real-time freshness monitoring and synergistic preservation for shrimp.

Conventional food packaging lacks active preservation and real-time monitoring. This study presents a novel polyvinyl alcohol -based film/label incorporating N-doped carbon dot, exhibiting enhanced pH responsiveness, potent antimicrobial/ antioxidant properties and biosafety (cell relative viability >90 %). The pH-sensitive label can capture the volatile amines from food spoilage, triggering its real-time dual-mode colorimetric/fluorescent signal changes with trimethylamine detection limit of 0.

Simulation study on supercontinuum broadening based on the BIC model.

Bound states in the continuum (BIC) refers to waves that are entirely confined within the continuous spectrum of radiation waves without interacting with them. In our study, we attempted to construct a waveguide satisfying BIC conditions by forming a polymer layer on a 4H-SiC substrate, positioned on an insulator. By fine-tuning the waveguide parameters, we minimized losses to the substrate continuum and determined that the lowest loss meeting BIC conditions occurs when the HSQ width is 1.

Compact mode converters in thin-film lithium niobate integrated platforms.

Mode converters, crucial elements within photonic integrated circuits (PICs) designed for multimode optical transmission and switching systems, present a challenge due to their bulky structures in thin-film lithium niobate (TFLN) integrated platforms, which are incompatible with the compact and efficient nature desired for dense PICs. In this work, we propose TE-TE, TE-TE, and TE-TE mode converters in shallowly etched TFLN, within small footprints. The experimental results show that the insertion loss is 0.