A Novel Optical Code RAKE Receiver Using a Multiport Encoder/Decoder

Abstract

We propose an energy efficient optical code (OC) receiver, based on a RAKE configuration, using a single passive multiport encoder/decoder (E/D). We numerically demonstrate the crosstalk signals are used to enhance the energy efficiency and the label recognition performance, using only a combiner and optical delay lines (ODL), without any additional photo detector (PD). We numerically analyze the system performance and experimentally investigate the influence of the beat noise, that can be eliminated.

Tunable optical code converter using XPM and linear-slope pulse streams generated by FBGs

“…In all our previous OPS and OCDM experiments [4][5][6], OC assignment was fixed and this was a fundamental limitation to the flexibility of both approaches.…”

“…To evaluate the effectiveness of the OC conversion, we have measured the code recognition performance by evaluating the power contrast ratio (PCR) [5], i.e., the ratio between the average power of autocorrelation and cross-correlation waveforms. The PCR for the OCs detected at adjacent ports of the multiport decoder, for different values of P p , are shown in Fig.…”