Zabih Ghassemlooy, Paul Anthony Haigh, Francesco Arca, Sandro Francesco Tedde, Oliver Hayden, Ioannis Papakonstantinou, Sujan Rajbhandari, "Visible light communications: 3.75 Mbits/s data rate with a 160 kHz bandwidth organic photodetector and artificial neural network equalization [Invited]," Photonics Res. 1, 65 (2013)

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- Photonics Research
- Vol. 1, Issue 2, 65 (2013)

Fig. 1. Bottom view photograph of the OPD under test with spatial characteristics also noted.

Fig. 2. Responsivity curves of the OPD under test and a generic ThorLabs PDA36A Si photodetector.

Fig. 3. Schematic system block diagram. TIA: transimpedance amplifier; V O L E D : LED bias voltage; V P D : OPD bias voltage; High Z : high impedance.

Fig. 4. OPD BWs for four light densities, varying from 10 to 300 μW · cm − 2 , corresponding to BWs ranging between 56 and 160 kHz, giving an ∼ 100 kHz range.

Fig. 5. BER performance for OOK and 4-PPM with and without ANN equalization.

Fig. 6. BER performance of 4-PPM across the system with varying light density. In each case, over 1 Mbit / s can be supported.

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