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The application of bias current feedback to a semiconductor optical amplifier is shown to improve considerably its noise and distortion performance in analogue applications. Improvements in harmonic distortion of up to 12.75 dB, and in noise levels of up to 7.5 dB, have been achieved.
Inspec keywords: feedback; semiconductor lasers; interference suppression; optical modulation; semiconductor device noise
Other keywords:
Subjects: Semiconductor lasers; Laser beam modulation, pulsing and switching; mode locking and tuning; Lasing action in semiconductors