DocumentCode
796034
Title
Polarization-adjustment-free phase error measurement of an arrayed-waveguide grating by optical low coherence interferometry
Author
Takada, Kazumasa ; Abe, Makoto
Author_Institution
NTT Photonics Labs., Ibaraki, Japan
Volume
14
Issue
8
fYear
2002
Firstpage
1142
Lastpage
1144
Abstract
We report that the phase error distribution of an arrayed-waveguide grating can be measured precisely without adjusting the state of polarization in either arm of the interferometer. This is achieved by combining a 90/spl deg/ Faraday rotator and a polarizer with a depolarized light source in a conventional fiber-optic Mach-Zehnder interferometer.
Keywords
Faraday effect; Mach-Zehnder interferometers; diffraction gratings; fibre optic sensors; light interferometry; measurement errors; optical arrays; optical testing; optical waveguides; Faraday rotator; arrayed-waveguide grating; depolarized light source; fiber-optic Mach-Zehnder interferometer; optical low coherence interferometry; phase error distribution; polarization-adjustment-free phase error measurement; polarizer; state of polarization; Arm; Arrayed waveguide gratings; Optical arrays; Optical crosstalk; Optical fiber polarization; Optical fiber testing; Optical interferometry; Optical polarization; Phase measurement; Phased arrays;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/LPT.2002.1021996
Filename
1021996
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