A 10-GHz Optoelectronic Oscillator at 1.1 $\mu$m Using a Single-Mode VCSEL and a Photonic Crystal Fiber

We report a self-starting optoelectronic oscillator operating at 1.1 μm that uses a gain-switched vertical-cavity surface-emitting laser (VCSEL) and a single-mode photonic crystal fiber. The modulation bandwidth and sidemode suppression ratio of the VCSEL were 7.2 GHz and more than 50 dB, respectively. A 10-GHz 11.5-ps optical pulse train with a timing jitter of 0.9 ps was successfully generated.