32 GBaud PDM coherent transmission over 8000 km based on recirculating optical fiber loop controller

Hao Guo, Xuemei Du, Fengping Yan*, Wenhua Ren, Ting Li, Guangbo Li, Xiangdong Wang, Dandan Yang, Haoyu Tan, Qi Qin, Zhenyu Gu, Yuezhi Cai, Wenjie Ji, Ting Feng, Huan Chang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A recirculating optical fiber loop controller (ROFLC) is essential equipment for experimental verification of long-haul optical fiber communication transmission. In this experiment, the integrated acousto-optic modulators are controlled by a timing circuit composed of counters and comparators in a field programmable gate array (FPGA) to control the on–off of the optical signal. The ROFLC is introduced into the communication system to achieve 4 quadrature-amplitude-modulation (QAM) signal at 32 GBaud, over 8000 km single-mode fiber (SMF) transmission utilizing polarization division multiplexing (PDM). The ROFLC makes possible a low-cost and lightweight optical fiber communication system, and strongly promotes the application of optical fiber communication systems.

Original languageEnglish
Article number104097
JournalOptical Fiber Technology
Volume90
DOIs
Publication statusPublished - Mar 2025

Keywords

  • Long-haul transmission
  • Optical fiber communication
  • Polarization division multiplexing
  • Recirculating optical fiber loop controller

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