2results about How to "Solve crosstalk" patented technology

The application provides a multi-core optical fiber and a butt joint method thereof, relates to the technical field of optical fibers, and aims to solve the technical problem of crosstalk between an identification layer and its adjacent fiber cores during optical fiber communication. The multi-core optical fiber comprises a cladding, an identification structure and a plurality of fiber cores; the plurality of fiber cores are uniformly arranged in the cladding, and the cross section of the cladding is circular; the cladding is provided with an identification hole, the identification hole is arranged in parallel with the fiber cores, and the identification hole penetrates through the entire cladding along the extension direction of the cladding; the identification structure is arranged in the identification hole, and the identification structure is arranged in offset with the symmetry axes of any two fiber cores and the central axis of the cladding; the identification structure comprises an identification layer arranged on the inner wall of the identification hole, and the identification layer surrounds a hollow; the identification layer is configured to form a refractive index difference with the cladding, and can absorb light introduced therein. The multi-core optical fiber provided by the application is one of space division multiplexing technical means, and is suitable for optical communication.

The application relates to a payment device and a payment control method. The payment device comprises a shell and a camera module, a coil module and a control mainboard arranged in the shell. The shell has an operation surface for user operation. The camera module is arranged to collect images in a direction towards the operation surface. The coil module is arranged around the camera module, so that the camera module collects images in a space surrounded by the coil module. The control mainboard is electrically connected with the two modules, and can selectively enable a code scanning payment function of the camera module or an induction payment function of the coil module according to the image collection result of the camera module. The application effectively reduces the device volume by integrating the camera module inside the annular area of the coil module to form a collision and scanning integrated layout. The application uses the existing camera module to identify the direction of a mobile phone to intelligently switch the payment mode, solves the crosstalk and interference problem, simultaneously saves a special distance sensor, significantly reduces the hardware cost and structural complexity, and realizes device miniaturization, low cost and high reliability.