Fast FBG Interrogation with Active Sagnac Interferometer Using Off-the-shelf Fiber Components
2020
We present a polarization-independent fiber Bragg grating (FBG) interrogator based on a rapidly-tunable Sagnac interferometer using a dual-polarization lithium-niobate phase modulator. A bandwidth of 100 kHz along a range beyond a full free-spectral-range is demonstrated.
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