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Optical Engineering

Integrated optical E -field sensor based on balanced Mach-Zehnder interferometer
Author(s): Rong Zeng; Bo Wang; Zhanqing Yu; Ben Niu; Yong Hua
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Paper Abstract

We report here a balanced Mach-Zehnder interferometer-based integrated optical E-field sensors (MZI IOES) configuration, where the output Y-branch is replaced by a 2×2 directional coupler. Based on detailed theoretical and experimental investigations, we prove such IOES configuration has a simple linear transfer function, as well as much improved optical bias control, highly desirable for practical field applications. The optical biases of the fabricated devices deviate from the ideal bias by 3.3°, 7.9°, and 14.5°, respectively. The theoretical analysis and experiment results show that this type of sensor inherits the advantages of a conventional MZI sensor and directional coupler sensor: with a sinusoidal transfer function and a better optical bias.

Paper Details

Date Published: 1 November 2011
PDF: 7 pages
Opt. Eng. 50(11) 114404 doi: 10.1117/1.3651809
Published in: Optical Engineering Volume 50, Issue 11
Show Author Affiliations
Rong Zeng, Tsinghua Univ. (China)
Bo Wang, Tsinghua Univ. (China)
Zhanqing Yu, Tsinghua Univ. (China)
Ben Niu, Tsinghua Univ. (China)
Yong Hua, Chongqing Optoelectronics Research Institute (China)

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