4 results about "Planar optical waveguide" patented technology

The embodiment of the application discloses a kind of plane optical waveguide circuit chip and optical receiving assembly test system, chip includes first beam splitter, modulation unit, second beam splitter and beam combination unit, wherein the first beam splitter is respectively connected with the input end of modulation unit and the input end of second beam splitter, the input end of first beam splitter is as the input end of the plane optical waveguide circuit chip;The output end of modulation unit and the output end of second beam splitter are respectively connected with the input end of beam combination unit, and the output end of beam combination unit is as the output end of the plane optical waveguide circuit chip.The embodiment of the application is integrated in the same plane optical waveguide circuit chip by first beam splitter, modulation unit, second beam splitter and beam combination unit, substantially simplify system structure, reduce equipment floor area, and then significantly test the stability and the comparability between channel, finally can effectively improve test efficiency and the accuracy of test result.

The application discloses a kind of full-automatic planar waveguide coupling equipment based on nanoscale sensing contact, including chip placement assembly, input component, output component;Input component and output component are respectively transmission connection with stepper motor;Stepper motor is electrically connected with driver;Coupling software controls driver to control stepper motor to drive input component and output component to carry out displacement in different directions respectively, realize that FA fiber core and chip waveguide carry out mode field matching, so as to realize optical waveguide preliminary alignment, coupling software automatically switches displacement step, again through input component, output component realizes accurate alignment;Coupling software controls driver to realize multi-channel equalization by controlling angle stepper motor step and movement;The application adopts high-precision stepper motor with high-precision sensing contact sensor, completely realizes that planar optical waveguide is fully automatic high progress coupling to light, improves the precision of planar waveguide coupling to light, and completely realizes high-precision automatic angle adjustment function.

The application discloses a miniaturized time phase decoder and a QKD receiver, wherein all on-chip devices are made based on a PLC process, the difference between the lengths of interferometer arms can be accurately controlled by means of an existing process, and a phase shifter or a phase modulator or the like device does not need to be arranged in an interference ring to perform interference dimension stabilization; all functional devices are passive devices except for an external single-photon detector, and the time phase decoder has high stability and reliability; and since the mode of the PLC planar optical waveguide is basically consistent with the mode in the optical fiber, the polarization state does not need to be specially controlled before being coupled into the chip, the requirement for external polarization controllers and the like devices is reduced, and the volume of the QKD receiver is further reduced.

This invention discloses a wiring structure and scanning control method for a focal plane optical switch grating antenna array, belonging to the field of planar optical waveguide technology. The wiring structure includes multiple optical switch structural units arranged in an array, an optical waveguide bus layer, a first electrode wiring layer, and a second electrode wiring layer. Both the first and second electrode wiring layers include electrode wirings, electrodes, and control signal input contacts. The optical waveguide bus layer includes at least one optical waveguide bus and an optical coupling input terminal. The optical waveguide bus connects all optical switches in the array in series, and the coupling waveguide ends of the optical switches are connected to the grating transmitting antennas. The optical waveguide bus is located between the first and second electrodes and is parallel to the coupling waveguides of the optical switches. This invention eliminates the need for selection switches, enabling independent control of the operating state of any optical switch in the array. Furthermore, when the number of optical waveguide buses is greater than one, multiple optical switches can operate in parallel to improve the array scanning speed and flexibility.