Interferometric method for phase error measurement in an arrayed waveguide grating with a free space output

Interferometric method for phase error measurement in an arrayed waveguide grating with a free space output

We demonstrate a simple phase error measurement technique for AWG that radiate to free-space. The pair-wise far-field interference pattern of adjacent waveguides is used to measure the relative phase shift, with 13mrad accuracy.

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Bibliographische Detailangaben
Hauptverfasser: Zektzer, R., Sinefeld, D., Goldshtein, N., Marom, D. M.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Arrayed waveguide gratings
Interference
Lenses
Measurement by laser beam
Measurement uncertainty
Phase measurement
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Beschreibung
Zusammenfassung:We demonstrate a simple phase error measurement technique for AWG that radiate to free-space. The pair-wise far-field interference pattern of adjacent waveguides is used to measure the relative phase shift, with 13mrad accuracy.