A 32-element 8-bit photonic true-time-delay system based on a 288 × 288 3-D MEMS optical switch

A large-scale three-dimensional microelectromechanical-system optical switch is used for the first time to realize a true-time-delay (TTD) beamformer for phased-array radar applications, with a capacity of 32 antenna elements and eight bits of delay. The 288 288 optical switch has a median loss of 1...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 15; no. 6; p. 849
Main Authors Kaman, V, Zheng, Xuezhe, Helkey, R.J, Pusarla, C, Bowers, J.E
Format Journal Article
LanguageEnglish
Published New York The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 01.06.2003
Subjects
Antennas
Delay
Microelectromechanical systems
Noise levels
Optical switching
Photonics
Radar
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Summary:A large-scale three-dimensional microelectromechanical-system optical switch is used for the first time to realize a true-time-delay (TTD) beamformer for phased-array radar applications, with a capacity of 32 antenna elements and eight bits of delay. The 288 288 optical switch has a median loss of 1.4 dB and all measured 82 944 paths exhibit less than 2.3 dB loss at 1310 nm. The TTD beamformer exhibits a loss variation of 1.5 dB, which is equalized using a mirror-offset technique.
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ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2003.811348