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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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Large-scale WDM passive optical network based on cyclical AWG.

Zhaowen Xu1, Xiaofei Cheng, Yong-Kee Yeo

  • 1Institute for Infocomm Research, A*STAR, #21-01 Connexis (South Tower), Singapore 138632, Singapore. zxu@i2r.a-star.edu.sg

Optics Express
|June 21, 2012
PubMed
Summary
This summary is machine-generated.

This study demonstrates a large-scale passive optical network using wavelength division multiplexing, achieving 124 bidirectional channels for high-speed data transmission. Performance is optimized by analyzing extinction ratio, seeding power, and subcarrier frequency selection.

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Area of Science:

  • Telecommunications Engineering
  • Optical Networking
  • Signal Processing

Background:

  • Passive optical networks (PONs) are crucial for broadband access.
  • Wavelength division multiplexing (WDM) enhances fiber capacity.
  • Scalability and efficiency in PONs remain key research areas.

Purpose of the Study:

  • To propose and experimentally demonstrate a large-scale WDM-PON.
  • To investigate the impact of key parameters on network performance.
  • To optimize channel allocation and transmission parameters.

Main Methods:

  • Experimental demonstration of a WDM-PON system.
  • Utilizing a 32x32 cyclic Arrayed Waveguide Grating (AWG) for channel distribution.
  • Investigating the effects of extinction ratio and seeding power on Bit Error Rate (BER).
  • Simulation analysis of subcarrier frequency selection.

Main Results:

  • Simultaneous distribution of 124 bidirectional optical channels.
  • Achieved 10-Gb/s downstream and 1.25-Gb/s upstream transmission.
  • Quantified the influence of extinction ratio and seeding power on BER.
  • Identified optimal subcarrier frequencies through simulation.

Conclusions:

  • The proposed WDM-PON architecture is feasible for large-scale deployment.
  • Parameter optimization is critical for achieving high-performance optical networks.
  • This work contributes to the advancement of high-capacity broadband access technologies.