Abstract:A novel fiber Bragg grating (FBG)‐based chirp‐coded en/decoder is proposed for a coherent two‐dimensional (2D) time‐spreading wavelength‐hopping optical code‐division multiple‐access system. Combined with reconstruction‐equivalent‐chirp technology, the proposed coder can be easily realized in a single FBG with a conventional fabrication setup. Compared with other 2D encoders, the chirp‐coded encoders are expected to provide enhanced security, increased power efficiency, expanded code cardinality, and reduced c… Show more
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