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Comparison of Optical Self-Phase Locked Loop Techniques for Frequency Stabilization of Oscillators
Journal article   Open access   Peer reviewed

Comparison of Optical Self-Phase Locked Loop Techniques for Frequency Stabilization of Oscillators

Li Zhang, Ajay K Poddar, Ulrich L Rohde and Afshin S Daryoush
IEEE photonics journal, v 6(5), pp 1-15
Oct 2014
DOI: https://doi.org/10.1109/JPHOT.2014.2360294
Featured in Collection :   UN Sustainable Development Goals @ Drexel
url
https://doi.org/10.1109/jphot.2014.2360294View
Published, Version of Record (VoR)CC BY-NC-ND V4.0,  Open
url
https://doi.org/10.1109/JPHOT.2014.2360294View
Published, Version of Record (VoR) Open

Abstract

Delay lines dual loop SPLL (DSPLL) fiber optic link (FOL) Optical fibers Optoelectronic oscillator (OEO) phase locked loop (PLL) Phase locked loops Phase noise self-phase locked loop (SPLL) spurious side-modes voltage controlled oscillator (VCO) Voltage-controlled oscillators
Self-phase locked loop (SPLL) through long optical delay lines is investigated for improving the phase noise of the optoelectronic oscillator (OEO) and the voltage-controlled oscillator (VCO). This paper features analytical modeling of close-in to carrier phase noise of oscillators employing SPLL technique using single and multiple delay loops. Experimental results are also provided to verify the analytical modeling and explore critical circuit design parameters to achieve substantial phase noise reduction. Performance comparison is presented for SPLL using electrical phase shifter, Mach-Zehnder modulator (MZM)-based phase shifting, and electrical VCO. Phase noise reduction of 65 dB at 1-kHz offset is achieved for an electrical VCO employing a dual-loop SPLL with 3- and 5-km optical fiber delay lines, whereas the phase locking based on MZM and electrical phase shifter provided 20- and 38-dB reductions at 1-kHz offset for an OEO, respectively.

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36 citations in Web of Science
43 citations in Scopus

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Collaboration types
Industry collaboration
Domestic collaboration
Web of Science research areas
Engineering, Electrical & Electronic
Optics
Physics, Applied
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