Computation of Phase Noise Spectrum in Optoelectronic Oscillator

Banerjee, Abhijit; Britto, Larissa Aguiar Dantas de; Pacheco, Gefeson Mendes

doi:10.1109/jqe.2021.3065530

Cited by 1 publication

(9 citation statements)

References 27 publications

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“…The half value is because equation (17) gives the PN PSD which is twice the SSNCR [18,19]. Remark 4: As an important comparison, it should be noted that the Lorentzian shape is consistent with the predictions of [1] and [17]. The full width at half maximum (FWHM) of the PSD in equation (26a) of [1] is given as…”

Section: Exact Output Psd In Presence Of a White Noise Sourcementioning

confidence: 58%

“…Reference [14] also predicts the same FWHM as in [1], however as inferred from equations ( 49) and (50) of [17], the PSD of the noise at close-in offsets is predicted as…”

Section: mentioning

confidence: 77%

“…Remark 6: Based on the abovementioned results, for accurate estimation of the PN at all frequency offsets, one can simultaneously plot the PN PSD based on the first rule of equation ( 27) (called the SDAA) and half of the resulted values of equation (17). For small offset frequencies where equation ( 17) predicts larger values, the SDAA can be regarded as reliable and more accurate.…”

Section: Comparing Results With Mcsmentioning

confidence: 99%

“…Although [17] considers both white and colored noises, however, it only gives the non-singular PSD in the presence of the white noise sources. Here this non-singular PSD in the presence of both white and colored noises is computed using a completely different approach than those of [1,17]. 26) can be any periodic function of   tt   .…”

Section: mentioning

confidence: 99%

“…For smaller offsets, larger runtimes are required. To the best of the author's knowledge, the references [1] and [17] are the only ones that predict a non-singular PSD at zero offset frequency. However, they have shortcomings as mentioned in section III.…”

Section: Introductionmentioning

confidence: 99%

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Accurate Estimation of the Phase Noise of Delay-Based Optoelectronic Oscillators at Close-in Frequency Offsets

Jahanbakht

2024

Scientia Iranica

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Delay-based optoelectronic oscillators (OEOs) use the large propagation delays of long optical fibers to produce ultra-low phase noise (PN) radio frequency (RF) oscillations. Most of the OEO-PN analysis approaches in the literature predict a singular value for the output variable's PN-induced power spectral density (PSD) at zero offset frequency from the carrier. The current paper aims to resolve this issue. First the perturbation theory of classical oscillators is generalized to extract the stochastic delay differential equation (SDDE) governing the PN of OEOs. Then the well-known small delay approximation approach is used to derive a stochastic ordinary differential equation (SODE) governing the PN. Using the previously published solutions to this SODE, the PN-PSD of the OEO is extracted in presence of both white and colored noise sources. As the small delay approximation is only valid for small frequency offsets, the obtained PSDs are only accurate at these offsets. This approach avoids the non-physically large values encountered in classical approaches. For larger frequency offsets one can use the classical noise analysis techniques in the literature. The validity of this approach is verified by comparing its results with those in the literature and direct Monte-Carlo simulations.

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Section: Exact Output Psd In Presence Of a White Noise Sourcementioning

confidence: 58%

“…Reference [14] also predicts the same FWHM as in [1], however as inferred from equations ( 49) and (50) of [17], the PSD of the noise at close-in offsets is predicted as…”

Section: mentioning

confidence: 77%

Section: Comparing Results With Mcsmentioning

confidence: 99%