Extinction Ratio Improvement Of Lithium Niobate Modulators For Quantum Communication Systems

Alexander Tronev,Igor Ilichev,Petr Agruzov,M.V. Parfenov, L.V. Shamray,Alexander Shamray

2018 INTERNATIONAL CONFERENCE LASER OPTICS (ICLO 2018)（2018）

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摘要

A method for photorefractive trimming of lithium niobate integrated optical modulators was developed. An improvement in the extinction ratio in a Mach-Zehnder (MZ) modulator by photorefractive precision adjustment of its couplers was achieved. An increase in the extinction ratio by 18 dB (from 30 to 48 dB) was demonstrated.

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关键词

Integrated optics, photorefractive effect, lithium niobate, Mach-Zehnder modulator, high extinction ratio

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