| 摘要 |
Problem An object of the present invention is to provide an optical code division multiple access system which is used by many people. Means for Solving The above problem is solved by an optical code division multiple access, OCDMA, system 5 which have a central office 2 comprising a multi-port optical encoder 1, a decode part 4 comprising a decoder 3 for decoding optical code signals from the multi-port optical encoder 1. The multi-port optical encoder 1 transform input optical signals into optical code signals the wavelength of them differs at predetermined amount based on code pattern. The decoder 3 is super structured fiber Bragg grating, SSFBG, which has center wavelength that corresponds to optical code signal.
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