Demonstration of OCDMA system using amplitude sampled fiber Bragg grating as encoder and decoder

In this paper, an optical code division multiple access (OCDMA) system is demonstrated. The ultrashort light pulse is encoded and then decoded by amplitude sampled fiber Bragg gratings with equivalent phase shift (EPS). Compared with traditional superstructured fiber Bragg grating (SSFBG) with real phase shift (RPS), FBG with EPS is much easier to fabricate. In our experiment, it shows its full ability to perform encoding and decoding in OCDMA systems, and good encoding/decoding performance is achieved.