Stability, Noise, and Nonlinear Distortion Analysis of a Sampling OPLL

The behavior of a sampling optical phase-locked loop (OPLL) is analyzed. An equivalent time invariant system model for the sampling OPLL was derived. With the help of the model, the stability of a sampling OPLL was found to depend not only on the sampling frequency but also on the duty cycle of the...

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Bibliographic Details
Published in:Journal of lightwave technology 2018-07, Vol.36 (13), p.2783-2790
Main Authors: Ding, Ding, Xu, Longtao, Li, Yifei
Format: Article
Language:English
Subjects:
Noise floor
nonlinear distortion
Nonlinear optics
Optical distortion
Optical feedback
Optical fiber communication
Optical modulation
optical phase-locked loop
Optical pulses
optical sampling
stability
Stability analysis
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Summary:The behavior of a sampling optical phase-locked loop (OPLL) is analyzed. An equivalent time invariant system model for the sampling OPLL was derived. With the help of the model, the stability of a sampling OPLL was found to depend not only on the sampling frequency but also on the duty cycle of the sampling pulse. In addition, the closed-form solutions for the sampling OPLL output noise and nonlinear distortions were also derived. The theoretical results were validated by numeric simulations.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2018.2820732