Paper
15 December 2000 Design of photonic true-time-delay networks for radar application
Author Affiliations +
Proceedings Volume 4087, Applications of Photonic Technology 4; (2000) https://doi.org/10.1117/12.406404
Event: 2000 International Conference on Application of Photonic Technology (ICAPT 2000), 2000, Quebec City, Canada
Abstract
Photonic techniques offer several advantages in microwave systems and applications. Optical method of generating time delay of a microwave signal for beam forming and beam steering an antenna array has been an important application.1 The advantages are in terms of higher resolutions and bandwidth. In this paper we present an optical integrated circuit that forms a part of optical true time delay network. The circuit consists of different segments of curved optical waveguides selected by electro-optic switching on a lithium niobate substrate. The design is for a 16-element antenna array with 4-bit beam forming resolution. Optimisation of delay time lengths with respect to time delay is done. Also analysis of errors in beam steering angle and time delay due to variations in curved waveguide arc lengths and cross talk in optical directional coupler switches are also presented.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
K. S. Swaminathan, Talabuttala Srinivas, and Ananth Selvarajan "Design of photonic true-time-delay networks for radar application", Proc. SPIE 4087, Applications of Photonic Technology 4, (15 December 2000); https://doi.org/10.1117/12.406404
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KEYWORDS
Waveguides

Error analysis

Integrated optics

Antennas

Beam steering

Directional couplers

Switches

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