Reduction of mode partition noise by using semiconductor optical amplifiers

By Kenji, Hiromu Toba. Conference Digest. 2000 IEEE 17th International Semiconductor Laser Conference. (Cat. No.00CH37092), 2000

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Directly Modulated Self-Seeding Reflective Semiconductor Optical Amplifiers as Colorless Transmitters in Wavelength Division Multiplexed Passive Optical Networks (2007, background): “the input optical signal will be suppressed at low frequencies but not at higher frequencies due to limited carrier lifetime, resulting in a flat response at higher frequencies [14], [15].”
High-channel-count 20 GHz passively mode-locked quantum dot laser directly grown on Si with 41 Tbit/s transmission capacity (2018, methodology): “With the help of the SOA by suppressing the low-frequency mode partition noise [29], the laser demonstrates an integrated average RIN value of −133 dB∕Hz of each line, which is suitable to be employed in advanced modulation format PAM-4 transmission systems to boost the bandwidth and efficiency [30]”
Wavelength channel data rewrite using saturated SOA modulator for WDM networks with centralized light sources (2003, methodology): “SOA has so far been analyzed using a small-signal model [10]‐[ 12 ].”