Demonstration of 512-TR-PPM Fiber Optical Transmission Link
2023 Photonics & Electromagnetics Research Symposium (PIERS 2023) 2023
Sandis Spolītis, Dmitrijs Prigunovs, Sandis Migla, Dilan Enrique Ortiz Blanco, Oskars Šēlis, Pauls Ēriks Šics, Armands Ostrovskis, Tatjana Solovjova, Jānis Semeņako, Artūrs Āboltiņš

In this paper, we demonstrate a data transfer over a 20km long single-mode fiber (SMF) optical communication link using a transmitted-reference pulse position modulated (TR-PPM) signals with a pulse duration of 50 ps. Employment of position widths (time bins) of 50, 100, and 200 ps with 512 positions per one symbol allows achieving a transmission rate of up to 59.5 Mbps. Implementation of a robust PPM communication with a very low duty cycle over the C-band fiber optical links, where the typical signal attenuation for standard SMF fiber is around 0.2 dB/km at 1550 nm wavelength, paves the way to long-reach high energy-efficiency data transmission links. After photodetection by high-speed PIN photodiode, precisely detecting a high number of pulse positions with 50 ps accuracy is challenging. Therefore, we demonstrate TR-PPM signal demodulation using a high-accuracy event timer A033-ET. To enable the operation of this event timer, PPM pulses at the input of this timer are expanded to at least 700 ps using our developed pulse duration expansion module, which includes an in-house manufactured electrical low-pass filter (LPF) and other supporting radio frequency components.

Atslēgas vārdi
Pulse position modulation, optical fiber, bit error rate

Spolītis, S., Prigunovs, D., Migla, S., Ortiz Blanco, D., Šēlis, O., Šics, P., Ostrovskis, A., Solovjova, T., Semeņako, J., Āboltiņš, A. Demonstration of 512-TR-PPM Fiber Optical Transmission Link. No: 2023 Photonics & Electromagnetics Research Symposium (PIERS 2023), Čehija, Prague, 3.-6. jūlijs, 2023. Piscataway: IEEE, 2023, 1416.-1416.lpp. ISBN 979-8-3503-1285-0. e-ISBN 979-8-3503-1284-3. ISSN 2831-5790. e-ISSN 2831-5804. Pieejams: doi:10.1109/PIERS59004.2023.10221307

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