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Temporal/spatial optical CDMA networks-design, demonstration, and comparison with temporal networks

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3 Author(s)

The design and experimental results for a temporal/spatial (T/S) noncoherent optical code-division multiple access (CDMA), based on matrix codes, using a breadboard of passive multimode fiber-optic couplers and delay lines, is presented. It is shown that a T/S CDMA network allows for shorter bit times, given a set laser pulse width, compared to a temporal CDMA network. Also, T/S codes result in a reduction of autocorrelation sidelobes and cross-correlation peaks, and the T/S network has lower losses. It is also shown that the couplers are critical components in maintaining code integrity.<>

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Photonics Technology Letters, IEEE  (Volume:4 ,  Issue: 10 )