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Proceedings Paper

Frequency division multiplexed radio-over-fiber transmission using an optically injected laser diode
Author(s): Sze-Chun Chan
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Paper Abstract

Nonlinear dynamics of semiconductor lasers have recently attracted much attention in the area of microwave photonics. By invoking the nonlinear dynamics of an optically injected laser diode, high-speed microwave oscillation can be generated using the period-one oscillation state. The oscillation is harnessed for application as a photonic microwave source in radio-over-fiber (RoF) systems. It is advantageous over conventional direct current modulation because it alleviates the modulation bandwidth limitation and naturally generates single sideband signals. The method is thus applicable to wireless communication systems even when the subcarrier frequency increases to 60 GHz. Because RoF is usually incorporated with standard wireless schemes that involve frequency division multiplexing (FDM), we investigate the performance of the optical injection system under simultaneous current injection of multiple data streams. Frequency mixings and competition for locking among subcarriers result in intermodulation distortion (IMD). The relative weightings of different channels should be optimized to ensure acceptable signal qualities. The results illustrate the feasibility of applying the optical injection system for FDM RoF transmission at high subcarrier frequencies.

Paper Details

Date Published: 8 May 2008
PDF: 9 pages
Proc. SPIE 6997, Semiconductor Lasers and Laser Dynamics III, 69971Y (8 May 2008); doi: 10.1117/12.781638
Show Author Affiliations
Sze-Chun Chan, City Univ. of Hong Kong (Hong Kong China)


Published in SPIE Proceedings Vol. 6997:
Semiconductor Lasers and Laser Dynamics III
Krassimir P. Panajotov; Marc Sciamanna; Angel A. Valle; Rainer Michalzik, Editor(s)

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