Amplifier-free slab-coupled optical waveguide optoelectronic oscillator systems | Zendy

William Loh | Zendy; Siva Yegnanarayanan | Zendy; Jonathan Klamkin | Zendy; Shan M. Duff | Zendy; Jason J. Plant | Zendy; Frederick J. O’Donnell | Zendy; P Juodawlkis | Zendy

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Amplifier-free slab-coupled optical waveguide optoelectronic oscillator systems

Author(s) -

William Loh,

Siva Yegnanarayanan,

Jonathan Klamkin,

Shan M. Duff,

Jason J. Plant,

Frederick J. O’Donnell,

P Juodawlkis

Publication year - 2012

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.019589

Subject(s) - phase noise , optics , materials science , amplifier , optoelectronics , optical amplifier , photodiode , microwave , waveguide , dbc , laser , physics , cmos , quantum mechanics

We demonstrate a free-running 3-GHz slab-coupled optical waveguide (SCOW) optoelectronic oscillator (OEO) with low phase-noise (<-120 dBc/Hz at 1-kHz offset) and ultra-low sidemode spurs. These sidemodes are indistinguishable from noise on a spectrum analyzer measurement (>88 dB down from carrier). The SCOW-OEO uses high-power low-noise SCOW components in a single-loop cavity employing 1.5-km delay. The noise properties of our SCOW external-cavity laser (SCOWECL) and SCOW photodiode (SCOWPD) are characterized and shown to be suitable for generation of high spectral purity microwave tones. Through comparisons made with SCOW-OEO topologies employing amplification, we observe the sidemode levels to be degraded by any amplifiers (optical or RF) introduced within the OEO cavity.

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