A high-performance aluminum wire-grid polarizer for the optical telecommunication applications

Changkui Hu; Deming Liu

doi:10.1117/12.804066

11 November 2008 A high-performance aluminum wire-grid polarizer for the optical telecommunication applications

Changkui Hu, Deming Liu

Proceedings Volume 7134, Passive Components and Fiber-based Devices V; 71344J (2008) https://doi.org/10.1117/12.804066
Event: Asia-Pacific Optical Communications, 2008, Hangzhou, China

Abstract

In this study, we propose a high-performance polarizer with Aluminum wire-grid structure that an antireflection layer (AR) is deposited between the metal wires and the transparent substrate. The polarization properties of the polarizer are analyzed in detail using rigorous coupled wave analysis (RCWA). The theoretical research shows that aluminum wire-grid polarizer has high transmission coefficient and extinction ratio in near infrared, as well as uniform performance with wide variations in the angle of incidence. For the fiber communication window of 1550nm, the transmittance and the extinction ratio are 95.4% and 35.3dB, respectively. Furthermore, a layer of Al₂0₃ forms rapidly on the aluminum wires even in high vacuum, the effect of the metal oxide layers on the polarization properties is modeled and analyzed. The results have shown that the polarizer with oxide layers coating on the wires still provides high performance. These features with their small form factor make it has potential for use in many integrated optical applications.

Citation Download Citation

Changkui Hu and Deming Liu "A high-performance aluminum wire-grid polarizer for the optical telecommunication applications", Proc. SPIE 7134, Passive Components and Fiber-based Devices V, 71344J (11 November 2008); https://doi.org/10.1117/12.804066

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