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Deep Integration Between Polarimetric Forward-Transmission Fiber-Optic Communication and Distributed Sensing Systems.

George Y Chen1,2, Ming Chen1,2, Xing Rao1,2

  • 1Shenzhen Key Laboratory of Photonic Devices and Sensing Systems for Internet of Things, Guangdong and Hong Kong Joint Research Centre for Optical Fibre Sensors, State Key Laboratory of Radio Frequency Heterogeneous Integration, Shenzhen University, Shenzhen 518060, China.

Sensors (Basel, Switzerland)
|November 9, 2024
PubMed
Summary
This summary is machine-generated.

This study integrates distributed vibration sensing into fiber-optic networks using dual-polarization-state polarization shift keying (2-PolSK) without extra hardware. The system enables structural health monitoring alongside existing communication, achieving high sensitivity and long-distance detection.

Keywords:
PolSKcommunication–sensing integrationdistributed sensingfiber-optic sensorforward transmissionlong-distancevibration sensing

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Area of Science:

  • Optical Communications
  • Sensing Technology
  • Network Infrastructure

Background:

  • Fiber-optic networks are critical for interconnected cities, necessitating robust structural health monitoring.
  • Existing monitoring methods often require dedicated hardware or impact communication performance.

Purpose of the Study:

  • To demonstrate a novel method for distributed vibration sensing in fiber-optic communication systems.
  • To enable structural health monitoring without altering existing hardware or communication bandwidth.

Main Methods:

  • Utilizing a dual-polarization-state polarization shift keying (2-PolSK) modulation format.
  • Implementing forward transmission-based distributed vibration sensing.
  • Co-existing sensing with PolSK data transmission.

Main Results:

  • Achieved a sensitivity of 0.4141 μV/με and a limit of detection of 563 pε/Hz1/2@100 Hz.
  • Demonstrated a sensing distance of 121 km without optical amplification.
  • Maintained a 300 Mb/s transmission rate with a BER of 5.202 × 10-12.

Conclusions:

  • Distributed vibration sensing can be effectively integrated into 2-PolSK fiber-optic systems.
  • The proposed method allows for simultaneous communication and structural health monitoring.
  • This approach offers a cost-effective solution for enhancing network resilience.