Pulse-Sharpened OOK Optical Transmission Using MZDI With Saturated EDFA in Space Laser Communication

• DOI: 10.1109/jlt.2024.3360525
• Publication Date: 2024-01-31T18:36:04Z
• Authors: Young-Jin Hyun; Hyemin Park; Sang-Kook Han
• Keywords: Free-Space Optical Communication; Erbium

Free space optical communication has attracted attention owing to its diverse advantages in satellite communication. However, requires high power overcome losses. This paper proposes a new modulation method that increases the 3 dB of on-off keying signal without adding additional bandwidth using single Mach-Zehnder delay interferometer (MZDI) and saturated erbium-doped fiber amplifier (EDFA) at transmitter. Owing average-limiting property EDFA, reducing effective duty cycle ratio peak output EDFA. The can be reduced by MZDI Mathematical analysis, simulation, proof-of-concept experiment proposed schemes were performed.