OPTICAL PRINTED CIRCUIT BOARD USING HOLOGRAPHIC GRATING

摘要

An optical printed circuit board using a holographic grating is provided to enhance accuracy of a process for transmitting and receiving signals between an optical waveguide and an element. A printed circuit board(11) includes holes(39) corresponding to optical transmitter and receiver(31,33). A plurality of core layers(13) are disposed in an internal layer of the printed circuit board in order to transmit an optical signal. A plurality of cladding layers(15) are disposed on the printed circuit board except for a hole forming part in order to surround the core layer. A volume type holographic grating(21) is formed on the cladding layer corresponding to the holes of the printed circuit board in order to change the path of the optical signal by diffraction. The holographic grating is arranged on the cladding layers between the cladding layers and the core layers corresponding to the holes of the printed circuit board in order to transmit the optical signal between the core layers by changing a path according to a wavelength of each signal.