Dual-pattern communication system using DBR laser in the intensity-modulation and direct-detection system
Author(s): Xu, Borui; Sun, Jiazheng; Wen, Huashun; Zhu, Ninghua
Source:OPTICAL ENGINEERING Volume:60 Issue:11 Article Number:116103 DOI:10.1117/1.OE.60.11.116103 Published:NOV 2021
Abstract: We propose a flexible dual-pattern communication system based on the existing intensity modulation and direct detection system, which exploits the wavelength tuning characteristic of the distributed Bragg reflector (DBR) laser. At the transmitter side of the system, the DBR laser is wavelength tuned by the wavelength coding signal and intensity modulated by the radio frequency (RF) signal. At the receiver side, the RF signal is detected directly by photodetector 1, while the wavelength coding signal is recovered by a specific optical filter. The proposed system is theoretically analyzed and verified at the C band experimentally. We successfully obtained clear eye openings for the 10- and 25-Gb/s nonreturn-to zero signal. The waveform graphs of the 10- and 100-kHz wavelength coding signal were also measured. The two transmission patterns did not interfere with each other no matter in the back-to-back or 5 km case. (C) The Authors. Published by SPIE under a Creative Commons Attribution 4.0 International License.
Accession Number:WOS:000724546600020
ISSN: 0091-3286
eISSN: 1560-2303
