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The oscillation frequency of an optoelectronic oscillator (OEO) depends on the global loop propagation time whose most important contribution comes from the optical fiber loop. However the fiber loop effective refractive index depends on temperature and because of the long length of the loop this effect can have a significant influence on the oscillation frequency. That can be a drawback if the OEO...
The classical structure of an optoelectronic oscillator (OEO) is based on a long optical fiber loop creating a delay line with very low insertion loss. The oscillation frequency is proportional to the reciprocal of the propagation delay which depends on temperature by the way of the effective refractive index of the fiber. In case of a long fiber loop, even a small change of the temperature can induce...
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