A simultaneous all-optical half/full-subtraction strategy using cascaded highly nonlinear fibers

Abstract

Using non-linear effects such as cross-gain modulation (XGM) and cross-phase modulation (XPM) inside two highly non-linear fibres (HNLF) arranged in cascaded configuration, a simultaneous half/full-subtracter is proposed. The proposed simultaneous half/full-subtracter design is attractive due to several features such as input data pattern independence and usage of minimal number of non-linear elements i.e. HNLFs. Proof of concept simulations have been conducted at 100 Gbps rate, indicating fine performance, as extinction ratio (dB) > 6.28 dB and eye opening factors (EO) > 77.1072% are recorded for each implemented output. The proposed simultaneous half/full-subtracter can be used as a key component in all-optical information processing circuits.

Keywords:

• All-optical signal processing
• all-optical computing
• all-optical logic design
• cross-gain modulation (XGM)
• cross-phase modulation (XPM)
• highly non-linear fibres (HNLF)

Disclosure statement

No potential conflict of interest was reported by the authors.