Open AccessLow-noise RF-amplifier-free slab-coupled optical waveguide coupled optoelectronic oscillators: physics and operation
Author(s) -
William Loh,
Siva Yegnanarayanan,
Jason J. Plant,
F.J. O'Donnell,
Matthew E. Grein,
Jonathan Klamkin,
Shan M. Duff,
P Juodawlkis
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.019420
Subject(s) - optics , optical amplifier , amplifier , phase noise , laser linewidth , relative intensity noise , materials science , optoelectronics , physics , offset (computer science) , laser , semiconductor laser theory , cmos , computer science , programming language
We demonstrate a 10-GHz RF-amplifier-free slab-coupled optical waveguide coupled optoelectronic oscillator (SCOW-COEO) system operating with low phase-noise (<-115 dBc/Hz at 1 kHz offset) and large sidemode suppression (>70 dB measurement-limited). The optical pulses generated by the SCOW-COEO exhibit 26.8-ps pulse width (post compression) with a corresponding spectral bandwidth of 0.25 nm (1.8X transform-limited). We also investigate the mechanisms that limit the performance of the COEO. Our measurements indicate that degradation in the quality factor (Q) of the optical cavity significantly impacts COEO phase-noise through increases in the optical amplifier relative intensity noise (RIN).