Direct Laser Modification of Thin Titanium Film for Fine-tuning of Photonic Lithium Niobate Circuits

A method for precise optical loss adjustment by laser modification of a thin titanium film on the surface of lithium niobate optical waveguides was developed. Precise balancing of Mach-Zehnder modulator was demonstrated and an increase of the extinction ratio from 30 to 48 dB was achieved.

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Bibliographic Details
Main Authors: Tronev, A. V., Parfenov, M.V., Ilichev, I.V., Agruzov, P.M., Ionov, A.M., Orlova, N.N., Bozhko, S.I., Shamrai, A.V.
Format: Conference Proceeding
Language:English
Subjects:
direct laser writing
integrated optics
lithium niobate
thin film
Online Access:Request full text
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Description
Summary:A method for precise optical loss adjustment by laser modification of a thin titanium film on the surface of lithium niobate optical waveguides was developed. Precise balancing of Mach-Zehnder modulator was demonstrated and an increase of the extinction ratio from 30 to 48 dB was achieved.
ISSN:2642-5580
DOI:10.1109/ICLO48556.2020.9285720