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

Volume

13

Issue

10

fYear

1995

fDate

10/1/1995 12:00:00 AM

Firstpage

2034

Lastpage

2040

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;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.469731

Filename

469731