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Implementation of Polarization-Sensitive OFDR With a Digital Coherent Transceiver
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DOI：10.1109/JPHOT.2026.3673128.png)
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Abstract
En 中文
We have demonstrated a polarization-sensitive OFDR which uses a commercially available digital coherent optical transceiver to generate a continuous-phase linear frequency chirp by carrier-suppressed single-sideband modulation. The linearity of the digitally generated chirp was experimentally verified, confirming the suitability of the transceiver for OFDR sensing applications. A phase and polarization diverse coherent homodyne receiver recovers the state of polarization (SOP) of backscattered light using an identically chirped local oscillator. With $26\ \text{GHz}$ chirping bandwidth, a spatial resolution of approximately $5\ {\text{mm}}$ was achieved in 200 $\mu {\text{s}}$. We experimentally measured position-dependent relative magnitude and orientation of stress-induced birefringence along the fiber.
Keywords:
Optical fiber polarization
Optical receivers
Optical polarization
Optical reflection
Optical mixing
Chirp
Optical scattering
Optical pulses
Optical fiber sensors
Optical feedback
Coherent transceiver
birefringence
polarization rotation
frequency-modulated continuous wave
Journal
I
IF:
2.4
Papers:
194
Citations:
1.1W
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