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Related Experiment Video

Updated: May 25, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Optical frequency tripling with improved suppression and sideband selection.

Manoj P Thakur¹, Maria C R Medeiros, Paula Laurêncio

¹Department of Electronic and Electrical Engineering, University College London, Torrington Place, London, WC1E-7JE, UK. m.thakur@ee.ucl.ac.uk

|January 26, 2012

Summary

This summary is machine-generated.

This study demonstrates a novel millimetre-wave radio-over-fibre system that is tolerant to optical dispersion. The system uses optical frequency tripling and achieves high sideband suppression for reliable data transmission.

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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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Last Updated: May 25, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs

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Published on: June 8, 2018

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

Area of Science:

Optoelectronics
Optical Communications
Millimeter-wave Technology

Background:

Radio-over-fibre (RoF) systems are crucial for high-frequency wireless communication.
Optical dispersion in RoF systems limits transmission distance and performance.
Existing methods for sideband suppression often lack flexibility and efficiency.

Purpose of the Study:

To demonstrate a novel optical dispersion-tolerant millimetre-wave RoF system.
To achieve enhanced and selectable sideband suppression using optical frequency tripling.
To evaluate the system's performance in transporting multiple wireless channels.

Main Methods:

Utilized cascaded optical modulators to generate optical single sideband (OSSB) or double sideband-suppressed carrier (DSB-SC) signals.
Implemented an optical frequency tripling technique for carrier generation.
Experimentally assessed the system by transporting 4 WiMax channels over 40 km of fibre.

Main Results:

Achieved high sideband suppression, limited primarily by optical noise and operational drift.
Demonstrated dispersion tolerance for both 10 GHz and 30 GHz (tripled carrier) signals.
Obtained an average relative constellation error (RCE) of -28.7 dB after 40 km of fibre.

Conclusions:

The proposed RoF system effectively overcomes optical dispersion challenges.
The optical frequency tripling technique with selectable sideband suppression enhances system performance.
The system shows promise for future high-frequency wireless communication applications.