Title :
Microwave Photonic Signal Detection Using Phase-Matched Optical Rectification in an AlGaAs Waveguide
Author :
Zhang, Jinye ; Bull, Jeffrey D. ; Darcie, Thomas E.
Author_Institution :
Univ. of Victoria, Victoria
Abstract :
We demonstrate a novel approach for detecting microwave-modulated optical signals through velocity-matched optical rectification in second-order optical nonlinear materials. Optical intensity modulation is down-converted to microwave frequency (5-20 GHz) using a traveling-wave GaAs electrooptic modulator as an optical square-law detector. Phase matching between microwave and optical waves is achieved through a velocity-matched slow-wave asymmetric coplanar-strip electrode structure.
Keywords :
III-V semiconductors; aluminium compounds; electro-optical modulation; gallium arsenide; microwave photonics; optical phase matching; optical waveguides; AlGaAs-GaAs; frequency 5 GHz to 20 GHz; microwave frequency; microwave-modulated optical signals; optical intensity modulation; optical square-law detector; phase-matched optical rectification; second-order optical nonlinear materials; traveling-wave electrooptic modulator; velocity-matched optical rectification; velocity-matched slow-wave asymmetric coplanar-strip electrode structure; Frequency conversion; Intensity modulation; Microwave frequencies; Nonlinear optics; Optical detectors; Optical frequency conversion; Optical materials; Optical modulation; Optical waveguides; Signal detection; Coherent microwave generation; electrooptic modulator; microwave photonics; optic rectification; phase match; slow-wave structure;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.909896
