Title :
A folded-path GaAs travelling-wave modulator for phased array receivers
Author :
Walker, R.G. ; Edge, C.
Author_Institution :
Marconi Technol., Towcester, UK
Abstract :
We have designed and demonstrated a DC-18 GHz GaAs travelling-wave modulator suitable for a complex multi-beam phased-array antenna receive system. The defining feature of the design is on-chip optical path-folding to enable the needed dense packing of the Rx modules with RF input at one end and optical interrogation from the other. Chip loss is below 6 dB. The optical S11 is low and dominated by the AR-coating of the optical facet
Keywords :
III-V semiconductors; Mach-Zehnder interferometers; antenna accessories; antenna phased arrays; electro-optical modulation; gallium arsenide; integrated optics; optical losses; optical waveguides; 0 to 18 GHz; 6 dB; AR-coating; GaAs; GaAs travelling-wave modulator; Rx modules; dense packing; folded-path travelling-wave modulator; multi-beam phased-array antenna receive system; onchip optical path-folding; optical facet; phased array receivers; Etching; Gallium arsenide; Optical filters; Optical interferometry; Optical modulation; Optical receivers; Optical transmitters; Optical waveguides; Phase modulation; Radio frequency;
Conference_Titel :
Microwave Photonics, 2000. MWP 2000. International Topical Meeting on
Conference_Location :
Oxford
Print_ISBN :
0-7803-6455-4
DOI :
10.1109/MWP.2000.889800
