Title :
Laser-fabricated delay lines in GaAs for optically steered phased-array radar
Author :
Eldada, Louay ; Scarmozzino, Robert ; Osgood, Richard M., Jr. ; Scott, David C. ; Chang, Yian ; Fetterman, Harold R.
Author_Institution :
Microelectron. Sci. Lab., Columbia Univ., New York, NY, USA
fDate :
10/1/1995 12:00:00 AM
Abstract :
We have used laser direct fabrication techniques to implement optical delay lines on an epitaxial GaAs/AlGaAs substrate. These integrated photonic circuits, which are important for optically-controlled phased-array radar, include asymmetric splitters with various splitting ratios, smoothly curved 90° bends, as well as linear waveguides. The delay lines were tested and found to have the desired delay and a power-output uniformity of ±2-4%
Keywords :
III-V semiconductors; aluminium compounds; antenna accessories; gallium arsenide; integrated optics; optical delay lines; optical fabrication; optical radar; optical testing; phased array radar; GaAs; GaAs-AlGaAs; asymmetric splitters; epitaxial GaAs/AlGaAs substrate; integrated photonic circuits; laser direct fabrication techniques; laser-fabricated delay lines; linear waveguides; optical delay lines; optically steered phased-array radar; optically-controlled phased-array radar; power-output uniformity; smoothly curved 90° bends; splitting ratios; Circuits; Delay lines; Gallium arsenide; Integrated optics; Laboratories; Laser radar; Optical receivers; Optical refraction; Optical variables control; Optical waveguides;
Journal_Title :
Lightwave Technology, Journal of
