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Proceedings Paper

Compact 2.4-THz 5-bit substrate-guided-wave photonic true-time-delay module for phased array antennas
Author(s): Zhenhai Fu; Richard Liqiang Li; Ray T. Chen
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Paper Abstract

Photonic true-time-delay (TTD) lines offer many advantages over their electronic counterparts and attract more and more research efforts. In this paper, we report the demonstration of a 32 TTD lines (5-bit) based on substrate guided wave propagation combined with slanted photopolymer volume phase gratings on a quartz substrate. The system design, device fabrication, optimization of fanout intensity uniformity, and device performance evaluation are addressed as well. The fanout beam intensity uniformity is within plus or minus 10%. The packing density is 2.5 delay lines/cm2. The device has a measured bandwidth of up to 2.4 THz and a measured fanout delay step of 50 ps. A 50 GHz optically heterodyned microwave signal is generated, sent through the device, and then detected at the output end.

Paper Details

Date Published: 22 December 1997
PDF: 19 pages
Proc. SPIE 3290, Optoelectronic Integrated Circuits II, (22 December 1997); doi: 10.1117/12.298253
Show Author Affiliations
Zhenhai Fu, Univ. of Texas at Austin (United States)
Richard Liqiang Li, Univ. of Texas at Austin (United States)
Ray T. Chen, Univ. of Texas at Austin (United States)

Published in SPIE Proceedings Vol. 3290:
Optoelectronic Integrated Circuits II
Shih-Yuan Wang; Yoon-Soo Park, Editor(s)

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