Method, device and system for improving polarization extinction ratio

The invention discloses a method, device and system for improving the polarization extinction ratio, and the method comprises the steps: determining the length of a wide waveguide; after the length ofthe wide waveguide is determined, adjusting the length of the phase shift waveguide, and obtaining t...

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Bibliographic Details
Main Authors ZHOU LAI, REN MEIZHEN
Format Patent
LanguageChinese
English
Published 26.03.2021
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:The invention discloses a method, device and system for improving the polarization extinction ratio, and the method comprises the steps: determining the length of a wide waveguide; after the length ofthe wide waveguide is determined, adjusting the length of the phase shift waveguide, and obtaining the equalized length of the phase shift waveguide; determining the equalized length of the phase shift waveguide, and adjusting the length of the wide waveguide to obtain the adjusted length of the wide waveguide; judging the extinction ratio of the TE mode and the TM mode according to the equalizedlength of the phase shift waveguide and the adjusted length of the wide waveguide; if a preset condition is met, determining the equalized length of the phase shift waveguide and the adjusted lengthof the wide waveguide as adjusting parameters, and adjusting the polarization extinction ratio according to the adjusting parameters; and if the preset condition is not met, re-determining the lengthof the wide waveguide. Accor
Bibliography:Application Number: CN202011423444