Optically controlled phase shifters are desirable for optical communication, sensors, and
signal processing due to their simple implementation and low cost. We propose an all-fiber …

Since the discovery of the Bragg's law in 1913, Bragg gratings have become important
optical devices and have been extensively used in various systems. In particular, the …

Thin-film lithium niobate (LN) has emerged as an excellent platform for electro-optic
modulators (EOMs) owing to its strong electro-optic (Pockels) effect. However, it remains an …

We investigated an all-optical phase shifter and switch based on a graphene decorated side-
polished twin-core fiber (TCF) Michelson interferometer (MI). The MI was fabricated by …

All-fiber integrated phase shifters and optical switches have important applications in
photonic devices, such as optical controlling, optical fiber sensing, and signal processing. In …

We report an electrically programmable equivalent-phase-shifted (EPS) waveguide Bragg
grating implemented on silicon with programmable spectral response. Equivalent phase …

Continuously tunable slow and fast light generation using a silicon-on-insulator microring
resonator (MRR) incorporating a multimode interference (MMI) coupler is proposed and …

We propose and demonstrate a novel all-fiber phase shifter by integrating a microstructured
hollow fiber (MHF) and gold nanorods (GNRs) with photothermal effect. There are two cores …

We demonstrate all-optically controlled slow and fast lights in tilted fiber Bragg grating
(TFBG) with a graphene film. By employing graphene's efficient photothermal effect, the …

A slow/fast light device with a sealed size of 130 mm× 30 mm× 3 mm has been
demonstrated. Ultraslow propagation and superluminal propagation with group velocity …