We describe simultaneous generation of ultralow-noise optical pulses and microwave signal with a mode-locked fiber laser in a coupled optoelectronic oscillator configuration. We demonstrate 9.2-GHz optical and microwave signals with the measured phase noise of -140 dBc/Hz at 10-kHz offset frequency. We show that the mode-locked laser in the photonic oscillator serves as a high-Q filter and is responsible for the observed low phase noise.
© 2005 Optical Society of America
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.4510) Fiber optics and optical communications : Optical communications
(140.4050) Lasers and laser optics : Mode-locked lasers
(230.0250) Optical devices : Optoelectronics
(230.4910) Optical devices : Oscillators
Nan Yu, Ertan Salik, and Lute Maleki, "Ultralow-noise mode-locked laser with coupled optoelectronic oscillator configuration," Opt. Lett. 30, 1231-1233 (2005)