Abstract

MUNOZ, Christian Daniel et al. Low-Timing-Jitter and Low-Phase-Noise Microwave Signal Generation Using a VCSEL-Based Optoelectronic Oscillator. Ing. Investig. [online]. 2022, vol.42, n.2, e205.  Epub June 08, 2022. ISSN 0120-5609.  https://doi.org/10.15446/ing.investig.v42n2.87189.

This article presents the first results of the timing-jitter characterization of a VCSEL-based optoelectronic oscillator (VBO) at 2,5 GHz. For all implementations, vertical-cavity surface-emitting lasers (VCSEL) emitting in the O and C-bands were characterized. The resonant cavity was modified through the optical delay line length to verify its impact on timing-jitter and phase noise of the VBO. The lowest peak-to-peak jitter value obtained experimentally was 71 mUI when the optical fiber length was 1 km, whereas the lowest phase noise was -124 dBc/Hz with 5 km. This phase noise value, measured at 10 kHz offset, represents an 8 dB improvement compared to previous results, and it is the lowest value reported in the literature for the VBO architecture at 2,5 GHz.

Keywords : jitter; optoelectronic oscillator; phase noise; VCSEL; optical fiber.

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