Fig. 1. Schematic diagram of the proposed DBR-based AOCR. MZM, Mach–Zehnder modulator; EA, electronic amplifier; OMUX, passive polarization maintaining 1×4 optical multiplexer.

Fig. 2. (a) Typical free-running optical spectrum of the dual-mode DBR laser. (b) Optical spectra of the device under different DBR currents.

Fig. 3. (a) Optical spectrum of the 100 Gb/s RZ-OOK signal and (b) injection-locked dual-mode DBR laser. (c) Eye diagram of the 100 Gb/s signal. (d) Time trace of the recovered 100 GHz optical clock.

Fig. 4. (a) Degraded 100 Gb/s injection signal with 4.1 dB OSNR. (b) Time trace of the recovered optical clock. (c) The dependence of the timing jitter of the synchronized clock on the OSNR of the injected signal.

Fig. 5. (a) Eye diagrams and (b) optical spectrum of the 100 Gb/s signal after 25 km transmission. (b) Time trace of the recovered optical clock. (d) Injection-locked optical spectrum of the DBR laser.