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66906

Modeling and Analysis of LiNbO3 Optical Modulator with Two Step Back Slot Structure

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Last updated: 25 Dec 2024

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Abstract

A numerical model of x-cut LiNbO3 optical modulator with a two step back slot structure to satisfy the velocity matching condition without the layer of silicon dioxide is presented. The analysis is based on the method of transverse technique. An equivalent circuit is deduced to represent the structure. Generalized trial quantities are introduced as virtual adjustable sources in the equivalent network representation of boundary conditions. The lossy conductor of a planar transmission line is represented by a particular two port network. Thus, metallic losses can be evaluated for any metallization thickness without restricting the conductor modeling to a simple surface impedance approximation. The dependence of the effective microwave index, the characteristic impedance and the product of the drive voltage and the electrode interaction length on the thickness of substrate near the ground electrode has been investigated. The optical response of the modulator is also evaluated. This modulator is sufficient to 40 Gb/s optical transmission systems.

DOI

10.21608/mjeer.2012.66906

Authors

First Name

Ahmed A.

Last Name

Abou El-Fadl

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Affiliation

Faculty of Engineering, King Abdulaziz University, Rabigh, K.S.A

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First Name

Mahmoud A.

Last Name

Wafa

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Affiliation

Faculty of Engineering, King Abdulaziz University, Rabigh, K.S.A

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Volume

22

Article Issue

1

Related Issue

9618

Issue Date

2012-01-01

Receive Date

2019-12-30

Publish Date

2012-01-01

Page Start

33

Page End

43

Print ISSN

1687-1189

Online ISSN

2682-3535

Link

https://mjeer.journals.ekb.eg/article_66906.html

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https://mjeer.journals.ekb.eg/service?article_code=66906

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5

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Original Article

Type Code

1,088

Publication Type

Journal

Publication Title

Menoufia Journal of Electronic Engineering Research

Publication Link

https://mjeer.journals.ekb.eg/

MainTitle

Modeling and Analysis of LiNbO3 Optical Modulator with Two Step Back Slot Structure

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Article

Created At

22 Jan 2023