Lithium niobate is a material that exhibits outstanding electro-optic, nonlinear optical,
acousto-optic, piezoelectric, photorefractive, and pyroelectric properties. A thin-film lithium …

The huge development of micro-/nano-manufacturing techniques on different materials has
greatly expanded the possibilities of realizing on-chip multifunctional devices on photonic …

The compact and reliable ultraviolet (UV) source has attracted remarkable attention for its
potential use in optical measurement systems, high-density optical storage, and biomedical …

In this work, a doubly resonant photonic crystal (PhC) cavity using the merged bound state in
the continuum (BIC) is proposed to obtain a higher second harmonic generation (SHG) …

Due to the significant difference in spot size between lithium-niobate-on-insulator (LNOI)
waveguide and fiber, there is a substantial coupling loss between them, which limits the …

In this paper, a photonic crystal fiber (PCF) sensor based on the surface plasmon resonance
(SPR) effect for refractive index (RI) detection is proposed. We design a D-shaped polished …

A surface plasmon resonance sensor composed of photonic crystal fibers (PCF-SPR) with
an A uT i O _2-A u triple layer is designed for refractive index (RI) sensing and analyzed …

Microstructured polarization beam splitters (PBSs) have attracted much interest in recent
years. Here, a ring double-core photonic crystal fiber (PCB) PSB (PCB-PSB) with an …

The emergences of silicon-based photonic crystal (PhC) waveguides and two-dimensional
(2D) PhC line-defect optical cavities have revolutionized the field of integrated photonics. In …

In this paper, we propose a tunable optical filter with a high Q factor based on photonic
crystal technology, achieving a Q factor of 442.85 using thin film lithium niobate technology …