1 January 2008 Microwave photonic notch filter with an electro-absorption modulator in a Sagnac fiber loop
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Abstract
Coherence-free microwave photonic filter configurations are presented. The configurations are based on a Sagnac loop interferometer containing an electro-absorption modulator (EAM) without a nonreciprocal bias unit. Notch responses are obtained by modulating the clockwise and counterclockwise propagating waves inside the Sagnac loop at different times. Measured results verify the theoretical expressions and demonstrate a robust notch filter response extending to high frequency without reducing notch depth.
GuoXiang Ning, Ping Shum, Junqiang Zhou, Y. D. Gong, "Microwave photonic notch filter with an electro-absorption modulator in a Sagnac fiber loop," Optical Engineering 47(1), 018201 (1 January 2008). https://doi.org/10.1117/1.2835460
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