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Updated: May 21, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Bandwidth efficient bidirectional 5 Gb/s overlapped-SCM WDM PON with electronic equalization and forward-error

Jonathan M Buset¹, Ziad A El-Sahn, David V Plant

¹Photonics Systems Group, Department of Electrical and Computer Engineering, McGill University, Montréal, QC H3A 2A7, Canada. jonathan.buset@mail.mcgill.ca

|June 21, 2012

Summary

This study presents an improved overlapped-subcarrier multiplexed (O-SCM) WDM PON architecture for high-speed, cost-effective fiber optic networks. The new design achieves full-duplex 5 Gb/s transmission over 20 km, enhancing spectral efficiency and resilience.

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Last Updated: May 21, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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Published on: March 20, 2017

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Area of Science:

Optical Communications
Fiber Optic Networks
Signal Processing

Background:

Existing subcarrier multiplexed (SCM) techniques face bandwidth limitations in passive optical networks (PONs). Remotely seeded reflective semiconductor optical amplifier (RSOA)-based ONU transmitters present challenges for upstream transmission.
Cost-effective solutions are needed for high-bit-rate fiber optic communication systems.

Purpose of the Study:

To demonstrate an improved overlapped-subcarrier multiplexed (O-SCM) WDM PON architecture.
To achieve high spectral efficiency and bit rates using cost-sensitive components and simple electronics.
To overcome bandwidth limitations and ensure resilience to upstream impairments in PONs.

Main Methods:

Utilized an O-SCM WDM PON architecture with intensity modulation/direct detection transceivers.
Implemented data re-modulation, electronic equalization, and Reed-Solomon forward-error correction codes.
Employed a remotely seeded RSOA-based ONU transmitter.

Main Results:

Demonstrated full-duplex 5 Gb/s transmission over a 20 km fiber link.
Achieved greater spectral efficiency and higher bit rates compared to other SCM techniques.
Confirmed resilience to upstream impairments and analyzed Bit Error Rate (BER) performance.
Enabled full-duplex operation at BER ~ 10(-10) across a range of OLT launch powers (3.5 to 8 dBm).

Conclusions:

The proposed O-SCM WDM PON architecture offers a flexible and robust solution for next-generation fiber optic networks.
The integration of electronic equalization and FEC codes effectively mitigates bandwidth limitations.
The system provides cost-effective, high-performance full-duplex communication suitable for network operators.