Inverse relationship between the OEO Q-factor and vibration sensitivity

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Inverse_relationship_between_the_OEO_Qfactor_and_vibration_sensitivity.pdf (569.31 KB)

Links to Files

https://ieeexplore.ieee.org/document/6702215

Permanent Link

https://doi.org/10.1109/EFTF-IFC.2013.6702215
 http://hdl.handle.net/11603/38828

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UMBC Faculty Collection
UMBC Computer Science and Electrical Engineering Department
UMBC Student Collection

Author/Creator

Author/Creator ORCID

https://orcid.org/0000-0003-0269-8433

Date

2013-07

Type of Work

conference papers and proceedings
Text

Department

Program

Citation of Original Publication

Cahill, James P., Gary M. Carter, Curtis R. Menyuk, Justin Pritchett, Ryan Sorenson, Morris Berman, Olukayode Okusaga, and Weimin Zhou. “Inverse Relationship between the OEO Q-Factor and Vibration Sensitivity.” In 2013 Joint European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC), 43–45, 2013. https://doi.org/10.1109/EFTF-IFC.2013.6702215.

Rights

This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Public Domain

Subjects

Vibrations
UMBC Computational Photonics Laboratory
UMBC Optical Fiber Communications Laboratory
UMBC High Performance Computing Facility (HPCF)
Optical fiber sensors
UMBC High Performance Computing Facility (HPCF)
Phase noise
Optical fiber testing
UMBC Optical Fiber Communications Laboratory
Delays
optoelectronic oscillator
vibration sensitivity
Microwave oscillator
Optical fibers

Abstract

External vibrations induce phase noise in low noise oscillators such as the OEO (opto-electronic oscillator). The g-sensitivity quantifies the efficiency of this process. In fiber-based OEOs, vibrations of the fiber spool dominate the generation of phase noise. In this case, we observe decreasing g-sensitivity with increasing Q-factor (i.e., fiber length). This result indicates the interplay of two effects. First, only a portion of the optical fiber is affected by vibrations of the spool, even though the entire spool is subjected to vibrations. For the spools that we studied, the effective length is less than 500 m. Second, as the Q-factor increases, an OEO “filtering” effect reduces the phase noise that is induced by a constant magnitude perturbation. These results can be used to optimize the g-sensitivity of fiber-based OEOs by either reducing it for low phase noise RF generation or increasing it for sensing applications.