Low Phase Noise Direct-Modulation Optoelectronic Oscillator
Abstract
A direct-modulation OEO (DM-OEO) generating stable 10 GHz and 20 GHz signals is presented. A single loop and a dual loop approach are implemented and compared. We show an output signal of 15 dBm RF power, and a phase noise as low as-135 dBc/Hz at 10 kHz offset from the 10 GHz carrier. The 20 GHz second harmonic exhibits a noise level of-127 dBc/Hz at 10 kHz. A high spur level reduction is also obtained in the dual loop architecture.
Domains
Optics [physics.optics]| Origin | Files produced by the author(s) |
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