Linear 1×2 directional coupler for electromagnetic field detection
- 30 May 1988
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 52 (22) , 1850-1852
- https://doi.org/10.1063/1.99731
Abstract
A 1×2 directional coupler which can be used as an integrated optical electromagnetic field detector is described. Modulators have been formed from titanium‐indiffused lithium niobate waveguides operating at the 1.3 μm wavelength. Linear dynamic ranges of 74.3 dB with 190 μW light and 76.3 dB with 760 μW light were observed for separate devices. Voltage sensitivity measurements are in good agreement with theoretical predictions. A 3.1 μV rms sensitivity was obtained for a device with a 10 mm electrode length.Keywords
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