Title :
A 30-GHz Self-Injection-Locked Oscillator Having a Long Optical Delay Line for Phase-Noise Reduction
Author :
Lee, Kwang-Hyun ; Kim, Jae-Young ; Choi, Woo-Young
Abstract :
We demonstrate a millimeter-wave self-injection-locked (SIL) oscillator having a long optical delay line as a feedback route. In the SIL oscillator, a part of output signal is self-injected into the oscillator after passing through a long optical delay line, resulting in locked oscillation and phase-noise reduction. By controlling the self-injection power, we achieve 30-GHz oscillation with a sidemode suppression ratio larger than 50 dB and about 18-dB phase-noise reduction at 10-kHz frequency offset.
Keywords :
microwave photonics; optical communication equipment; optical delay lines; optical feedback; optical noise; oscillators; phase noise; feedback route; frequency 30 GHz; frequency offset; locked oscillation; millimeter-wave self-injection-locked oscillator; optical delay line; phase-noise reduction; self-injection power; sidemode suppression ratio; Delay lines; Feedback loop; Frequency; Millimeter wave communication; Optical feedback; Optical losses; Optical noise; Optical resonators; Oscillators; Phase noise; Optoelectronic oscillator (OEO); self-injection locking; single-mode oscillation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.909684
