Investigate reason behind slight shift "to the left" of the filtered drive signal IH(t) #21
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mjungo
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Jul 25, 2021
- import FFT fuctions from scipy instead of numpy - wrote new function parasiticsFilter that computes the frequency response of the passive electrical parasitics circuit Hp(f), applies that filter to the drive signal, and converts it back to the time domain through ifft - fixed bug in the computation of the VCSEL's intrinsic frequency response H(f) in function HfResp - adjusted the part of the code generating the drive current for the various modulation patterns to include parasitics filtering when required. - applied a "quick and dirty" fix to solve problem related to a shifted filtered signal in the time domain (#21) - renamed variable 'ct' as 'n' to be more aligned with literature, and to reflect the fact that the number of points n is the same in the time and frequency domains
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Not a killer, as a workaround has been applied. Still, one should understand what is the underlying issue (FFT phase?)
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