The Influence of Pyroelectric Effect on the Stability of Optical Parameters in Ti:LiNbO3 Modulators

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2024-07-25 DOI:10.1109/LPT.2024.3433409

Alena Shulepova;Stanislav Aksarin;Vladimir Shulepov;Vladimir Strigalev

引用次数: 0

Abstract

In this letter, we present the results of the study of the pyroelectric effect in Ti:LiNbO3 titanium diffusion waveguides formed on an X-cut substrate, which are the basis for the creation of phase modulators. This letter presents an analysis of the contribution of pyroelectric phase drift, its magnitude, and the relaxation time characteristics of the charges causing the drift. The measurements were carried out interferometrically in the circuit of a fiber-optic Mach-Zehnder interferometer. The final part of the experimental study shows the results of significant suppression of the pyroelectric effect in the modulator. Moreover, reductive annealing of the crystal in hydrogen-nitrogen medium does not deteriorate the optical transmission properties of the waveguide. The prospective application of this method in the fabrication of Ti:LiNbO3 phase modulators is also evaluated.

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热释电效应对 Ti:LiNbO3 调制器中光学参数稳定性的影响

在这封信中，我们介绍了在 X 切割基底上形成的 Ti:LiNbO3 钛扩散波导中热释电效应的研究结果，该波导是创建相位调制器的基础。这封信分析了热释电相位漂移的贡献、漂移的幅度以及导致漂移的电荷的弛豫时间特性。测量是在光纤马赫-泽恩德干涉仪电路中以干涉测量法进行的。实验研究的最后一部分显示，调制器中的热释电效应得到了显著抑制。此外，在氢氮介质中对晶体进行还原性退火也不会降低波导的光学传输性能。研究还评估了这种方法在制造 Ti:LiNbO3 相调制器中的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.