28 April 2009 RF photonic notch filters in high dynamic range links
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Optical implementation of RF filtering provides processing and switching advantages for analog optical links, bringing additional versatility to the field of RF photonics. Many RF photonic notch filter designs have demonstrated this increased link functionality, but most techniques are sensitive to polarization and phase noise, and are tunable over limited ranges, set by the tunability limits of conventional link components such as DFB lasers. We demonstrate an RF photonic notch filter with extremely wide tunability, high extinction ratio, and large range of useable bandwidths as part of a high dynamic range RF photonic link. We discuss methods for improved filter operation, present experimental results for X-band operation of the filter, and describe its use in applications such as co-site interference mitigation.
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Charles Middleton, Charles Middleton, Richard DeSalvo, Richard DeSalvo, } "RF photonic notch filters in high dynamic range links", Proc. SPIE 7339, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications V, 73390H (28 April 2009); doi: 10.1117/12.818740; https://doi.org/10.1117/12.818740

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