Fig. 1. Schematic of superluminal and slow light of high-bit-rate modulation signals based on optical filtering

Fig. 2. Transmission spectrum of the band-pass filter

Fig. 3. Spectra of probe light with different pump currents and inhibition. (a) Blue sideband blocked; (b) red sideband blocked

Fig. 4. Waveforms of the probe signal varied with different SOA injection currents for wavelength located in (a) blue sideband and (b) red sideband of BPF

Fig. 5. FHFD caused by detection light versus injection current in SOA under the condition of sideband blocked

Fig. 6. Waveforms of RZ-PRBS pulse sequence for wavelength varied with different injection currents located in red and blue sideband of filter.(a) Center wavelength is 1550.525 nm; (b) center wavelength is 1549.735 nm

Fig. 7. Relationship between DBP of RZ-PRBS optical signal with the injection current and wavelength of SOA