3 results about "Polymer optical waveguide" patented technology

This invention discloses a method for optical interconnection of silicon photonic chips based on meniscus-guided additive manufacturing, belonging to the field of silicon photonic chips. The method includes: in a controlled gas environment, using a printing material system containing polymers and organic solvents, stretching a liquid bridge between the optical interfaces of two silicon photonic chips using microneedles, and guiding the movement of the meniscus to form a polymer filament connecting the two ends. Subsequently, the solvent evaporates and solidifies, ultimately forming a free-space polymer optical waveguide spanning the chips. This method does not rely on high-energy lasers or adhesive application and washing processes, and is simple, low-cost, and highly efficient. The fabricated waveguides can achieve controllable spans from hundreds of nanometers to hundreds of micrometers in diameter and tens of micrometers to millimeters in length. The end faces can be optimized into controllable transition structures, effectively improving mode matching and coupling efficiency. It features low insertion loss, high alignment tolerance, and good mechanical stability, making it suitable for high-density silicon photonic packaging and heterogeneous integration.

The application belongs to the technical field of optical fiber communication, and specifically discloses a polymer optical waveguide amplifier applicable to a near-infrared full communication waveband, which comprises a substrate, a cladding structure and a polymer core layer; the cladding structure comprises at least one cladding layer, and the at least one cladding layer is a gain layer; the gain layer is composed of a transparent polymer material doped with a rare earth β-diketone complex, wherein the rare earth β-diketone complex is a gain medium, and the transparent polymer material is a host material of the gain medium; the cladding structure is selected from any one of the following configurations: the lower cladding layer is the gain layer, and the upper cladding layer is air; the upper cladding layer is the gain layer, and the lower cladding layer is a non-gain layer; the lower cladding layer and the upper cladding layer are both the gain layers; and the polymer core layer is located between the substrate and the upper cladding layer or between the lower cladding layer and the upper cladding layer. Through the synergistic effect of the polymer doped gain medium, the polymer core layer and the innovative pumping scheme, the final goal of the near-infrared full communication waveband, low cost and easy integration is achieved.

This invention discloses a wide-range, high-sensitivity magnetic field sensor based on a polymer optical waveguide. The sensor comprises a Fabry-Perot interference microcavity constructed from a single-mode fiber-polymer optical waveguide-single-mode fiber structure. Fe3O4 nanoparticles are doped into the cladding of the polymer optical waveguide to enhance the magnetic response. This invention utilizes a broadband light source as the probe light incident on the sensing structure, and a spectrometer receives the Fabry-Perot interference spectrum formed after reflection from the gold-plated end face. When an external magnetic field acts on the sensing unit, the Fe3O4 nanoparticles in the cladding are subjected to magnetic force, causing a change in the length of the polymer optical waveguide microcavity, which in turn leads to a resonant wavelength drift through interference. Accurate measurement of the magnetic field strength can be achieved by detecting the wavelength drift. This invention has advantages such as compact structure, simple fabrication, high sensitivity, wide measurement range, and resistance to electromagnetic interference, and is suitable for industrial monitoring, biomagnetic signal detection, and spatial magnetic field distribution mapping.