Coherence-free optical delay line signal processor

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A new coherence-free optical delay line signal processing structure based on an unbalanced Mach-Zehnder interferometer containing an optical frequency shifter is presented. A coherence-free notch filter response is obtained by frequency shifting the delayed optical signal. Results demonstrate a significant improvement of the filter response stability and of the signal-to-noise ratio compared to the conventional delay line signal processor.
Original languageEnglish
Pages (from-to)947-948
Number of pages2
JournalElectronics Letters
Issue number17
Publication statusPublished - 2007
Externally publishedYes


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