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Proceedings Paper

Microwave Fiberoptic Links For Phased Arrays
Author(s): Fred Semendy; Emanuel Katzen
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Paper Abstract

The phased array is a type of microwave antenna which has a number of individual radiating elements with spacings of elements of about a wavelength . Higher frequency antenna systems may require smal1er dimensions, so a modular approach with both amplification and signal control at each element can be envisioned for future phased arrays. Coaxial systems can be replaced by fiberoptic systems which are light, smal1, rugged, have 1arge bandwidths and are immune to EMI/EMP signals. The recently developed InGaAsP buried heterostructure 1aser is suitable for high frequency modulation and optical coupling to a fiber for transmission, and a high speed InGaAs photodetector is suitable as a receiver and microwave demodulator. This study concerns the direct modulation of a 1.3μm InGaAsP vapor phase regrown buried heterostructure 1aser (VPR-BH). The modulated signal, after coupling to a multimode 3μm optical fiber, is detected and demodulated by a 20-22GHz bandwidth InGaas photodetector.

Paper Details

Date Published: 12 April 1988
PDF: 9 pages
Proc. SPIE 0886, Optoelectronic Signal Processing for Phased-Array Antennas, (12 April 1988); doi: 10.1117/12.944203
Show Author Affiliations
Fred Semendy, Harry Diamond Laboratories (United States)
Emanuel Katzen, Harry Diamond Laboratories (United States)

Published in SPIE Proceedings Vol. 0886:
Optoelectronic Signal Processing for Phased-Array Antennas
Kul B. Bhasin; Brian M. Hendrickson, Editor(s)

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