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Group Meeting 10/27/2004.

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Presentation on theme: "Group Meeting 10/27/2004."— Presentation transcript:

1 Group Meeting 10/27/2004

2 Autocorrelator

3 Autocorrelation . Correlation function -> power spectrum
Note: this means we cannot measure chirp

4

5 Power Spectrum Measuring power spectrum is equivalent to autocorrelation i.e. Measuring the power spectrum is equivalent to taking the autocorrelation i.e. There’s no way to get phase from the autocorrelation

6 Cross Correlator

7 Cross Correlation If we know A_r, we can find H(w) exactly. If not, we can get the phase

8 Fiber Cross Correlation

9 Fiber Cross Correlation
Kazumasa Takada, Hiroaki Yamada, and Yasunori Inoue NTT Measurement error: 1.48um-1.63um

10 Fiber Cross Correlation
L. M. Simohamed, L. Delage, and F. Reynaud Equipe Optique, Institut de Recherche en Communications Optiques et Microondes

11 PM Fiber Cross correlation


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