Chinese Optics Letters, 2018, 16 (9): 091401, Published Online: Sep. 6, 2018
Transmission of 20 Gb/s PAM-4 signal over 20 km optical fiber using a directly modulated tunable DBR laser
Abstract
We report 20 Gb/s transmission of four-level pulse amplitude modulation (PAM) signal using a directly modulated tunable distributed Bragg reflector (DBR) laser. Transmission distance over 20 km was achieved without using optical amplifiers and optical dispersion compensation modules. A wavelength tuning range of 11.5 nm and a 3 dB bandwidth greater than 10 GHz over the entire wavelength tuning range were obtained.
Daibing Zhou, Dan Lu, Song Liang, Lingjuan Zhao, Wei Wang. Transmission of 20 Gb/s PAM-4 signal over 20 km optical fiber using a directly modulated tunable DBR laser[J]. Chinese Optics Letters, 2018, 16(9): 091401.