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Proceedings Paper

Data transmission using a spectrum sliced, radio-over-fibre link
Author(s): John E. Mitchell
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Paper Abstract

This paper investigates the use of optical spectrum slicing techniques for radio over fibre networks. We show that the transmission of complex-modulated data is possible by directly modulating a Super-luminescent Light Emitting Diode (SLED) with an Intermediate Frequency (IF) signal. This signal can then be up-converted to a higher frequency (18 GHz) using a Mach-Zehnder modulator. This has the advantage that a number of WDM channels can be up-converted using a single device. We demonstrate that due to dispersion the system performance over a given distance decreases as the width of the slice increases. This runs counter to the usual trend observed in spectrum slicing systems whereby, an increase in slice width is required to increase SNR. It is shown that although optical suppressed carrier modulation is used the length dependant nulls can be observed due to the width of the slices. It is seen that the intensity noise of the source and the required optical amplification stage degrades the signal by introducing intensity noise on the received signal. We detail the achievable performance of such a system with the potential to be used with multiple WDM channels.

Paper Details

Date Published: 19 April 2006
PDF: 8 pages
Proc. SPIE 6194, Millimeter-Wave and Terahertz Photonics, 619404 (19 April 2006); doi: 10.1117/12.663121
Show Author Affiliations
John E. Mitchell, Univ. College London (United Kingdom)

Published in SPIE Proceedings Vol. 6194:
Millimeter-Wave and Terahertz Photonics
Dieter Jäger; Andreas Stöhr, Editor(s)

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