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Updated: Jan 26, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Coherence-free microwave photonic notch filter with a single driver intensity modulator in a Sagnac fiber loop
1Network Technology Research Centre, Nanyang Technological University, Research TechnoPlaza XFrontier Block, 4th Storey 50 Nanyang Drive, Singapore 637553. ngxstone@pmail.ntu.edu.sg
Abstract:
A coherence-free microwave photonic filter configuration is presented. The configuration is based on a Sagnac loop interferometer containing a single-drive intensity modulator without a nonreciprocal bias unit. A notch response is obtained by modulating the clockwise and counterclockwise propagating waves inside the Sagnac loop at different times. A general theoretical analysis for both the reflected signal and the transmitted signal is obtained. Measured results verify the theoretical expressions and demonstrate a robust notch filter response.
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