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A High-Capacity Optical Metro Access Network: Efficiently Recovering Fiber Failures with Robust Switching and

Rahat Ullah1,2,3, Sibghat Ullah4, Ahmad Almadhor5

  • 1Institute of Optics and Electronics, Nanjing University of Information Science & Technology, Nanjing 210044, China.

Sensors (Basel, Switzerland)
|February 24, 2024
PubMed
Summary
This summary is machine-generated.

A novel central office (CO) for optical metro access networks (OMAN) uses a unique optical multicarrier (OMC) technique for high-speed, reliable data transmission. This system efficiently handles multiple users and recovers quickly from optical fiber failures.

Keywords:
optical communicationoptical metro access networkoptical multicarrier generationoptical ring networkwavelength division multiplexing

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Area of Science:

  • Optical Networking
  • Telecommunications Engineering

Background:

  • Optical metro access networks (OMAN) face challenges with high data rates and optical fiber failures.
  • Existing central office (CO) systems require improvement in affordability and reliability.

Purpose of the Study:

  • To propose a new CO for OMAN featuring an affordable and distinctive switching system.
  • To introduce a novel optical multicarrier (OMC) generation technique for enhanced network performance.
  • To address optical fiber failure issues and ensure uninterrupted communication.

Main Methods:

  • Developed a novel OMC generation technique using cascaded phase and Mach Zehnder modulators without amplifiers or filters.
  • Integrated the OMC into the CO architecture for OMAN.
  • Implemented a robust switching system with a centralized OLT for failure recovery.

Main Results:

  • Achieved high tone-to-noise ratio (TNR) of 40 dB and minimal amplitude excursions with the OMC technique.
  • Supported 1.2 Tbps downlink and 600 Gbps uplink transmission rates.
  • Demonstrated practical bit error rate (BER) from 10^-3 to 10^-13 (downlink) and 10^-6 to 10^-14 (uplink).
  • Showcased rapid transmission failure recovery in various optical fiber failure scenarios.

Conclusions:

  • The proposed CO with OMC generation offers a reliable and affordable solution for OMAN.
  • The system effectively accommodates multiple users and maintains high-quality transmission rates.
  • The implemented failure recovery mechanism ensures uninterrupted communication services.