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Updated: Jun 14, 2026
Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
Published on: March 20, 2017
Semi-analytical approach for performance evaluation of direct-detection OFDM optical communication systems
Tiago M F Alves1, Adolfo V T Cartaxo
1Department of Electrical and Computer Engineering, Instituto de Telecomunicações, Lisbon, Portugal. tiago.alves@lx.it.pt
Abstract:
A semi-analytical method to evaluate the bit error ratio (BER) in direct-detection (DD) optical fibre transmission systems employing orthogonal frequency division multiplexing (OFDM) and optically pre-amplified receivers is proposed. The method considers a Gaussian approach for the signal at the equalizer output and allows evaluating accurately the BER of each OFDM subcarrier for the receiver structure considered and for practical optical and electrical filters shapes, being a powerful tool to perform the optimization of these systems. The results obtained by the proposed method have shown excellent agreement with Monte Carlo estimates for DD-OFDM ultra-wideband radio signals and for two different DD-OFDM signals proposed for long-haul systems.
