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Advances in OptoElectronics
Volume 2008 (2008), Article ID 587091, 6 pages
Research Article

Detection of an Optical Signal Using Difference Frequency Generation in a Periodically Poled Microwave Waveguide

Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan

Received 9 June 2008; Accepted 25 August 2008

Academic Editor: Chang-qing Xu

Copyright © 2008 Hiroshi Murata and Yasuyuki Okamura. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The detection of an optical signal modulated at 15 GHz was demonstrated experimentally by using difference frequency generation based on a second-order nonlinear optical effect in a periodically poled microwave rectangular waveguide. The measured frequency dependence of the generated microwave signal was in good agreement with the theoretically expected result. An interesting application of the proposed device is the detection of high-speed optical clock detection.