Title :
Effect of photodetector on the noise conversion of the optical pulse train generated from mode-locked lasers
Author :
Wu, Kan ; Shum, Perry Ping
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
Noise conversion from relative intensity noise (RIN) to phase noise in the photodetection process of an optical pulse train is characterized by pump modulation method. It is found that the conversion ratio from RIN to phase noise is not sensitive to the noise power or the incident optical power, but decreases at a rate of 1/f with the increase of noise frequency. A new parameter related to the RF power difference of noise spurs is proposed and provides an easy way to describe the strength of the correlation between RIN and phase noise with no need of measuring the noise spectra of RIN and phase noise.
Keywords :
laser mode locking; laser noise; optical modulation; optical pulse generation; optical pumping; phase noise; photodetectors; RF power difference; mode-locked lasers; noise conversion; noise spectra; optical pulse train; phase noise; photodetector; pump modulation; relative intensity noise; Frequency modulation; Optical attenuators; Optical pulses; Phase modulation; Phase noise; Photodetector; intensity noise; mode-locked laser; phase noise; pulse;
Conference_Titel :
Photonics Global Conference (PGC), 2010
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-9882-6
DOI :
10.1109/PGC.2010.5705946
