OPTICAL FIBER COUPLER BASED ON MULTI-WAVELENGTH PHOTON SIEVE ARRAY

摘要

The present invention discloses an optical fiber coupler based on a multi-wavelength photon sieve array to which a brand new multi-wavelength photon sieve array is applied. Since a photon sieve device itself is very sensitive to wavelengths, only incident light of a 5 design center wavelength can pass through a photon sieve to focus and image, and incident light of other wavelengths cannot pass through the photon sieve to focus, and will even not produce a reflection phenomenon. Thus, there will be no problems such as reflections and crosstalk, effectively solving the problem that there are reflections and crosstalk between different transmission channels of the eXisting optical fiber couplers. Compared with a 10 sintering manufacturing process, the manufacturing process of the photon sieve device in the present invention is relatively mature. With low accuracy requirements, the mass production cost is low, and there is no process inconsistency caused by manual detection and packaging. Thus, the additional insertion loss is small. In addition, the photon sieve device in the present invention can be made into a film structure, and the focal length can be designed to be on the 15 order of micrometers. Thus, it has a compact structure, which is easy to integrate. (Figure l)