Modifying functionality of variable optical attenuator to signal monitoring through defect engineering
- 4 February 2010
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 46 (3) , 234-236
- https://doi.org/10.1049/el.2010.2785
Abstract
A commercial silicon-based variable optical attenuator has been converted to a low bandwidth (quasi-CW) light monitor through an ion implantation and annealing process. The measured total optical loss of the device is <5 dB while the responsivity per tapped fraction is 1 mA/W/dB. The straightforward manner in which the monitoring functionality is induced suggests a cost-effective route to CW optical monitors using a widely available commercial product.Keywords
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