Frequency Response of the Noise Conversion From Relative Intensity Noise to Phase Noise in the Photodetection of an Optical Pulse Train

Author

Wu, Kan ; Ouyang, Chunmei ; Wong, Jia Haur ; Aditya, Sheel ; Shum, Ping

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore

Volume

23

Issue

8

fYear

2011

fDate

4/15/2011 12:00:00 AM

Firstpage

468

Lastpage

470

Abstract

The frequency response of the noise conversion from the relative intensity noise (RIN) to the phase noise in the photodetection process of an optical pulse train is characterized with pump modulation method. It is found that the conversion ratio from the RIN to the phase noise is not sensitive to the noise power or the incident optical power, but decreases approximately as 1/f with the increase of noise frequency. A new parameter defined as the RF power difference of the noise spurious peaks is proposed and is shown to provide an easy way to estimate the strength of the RIN-to-phase-noise conversion avoiding the need to measure the exact noise spectra of the RIN and the phase noise.

Keywords

1/f noise; frequency response; laser mode locking; optical frequency conversion; optical modulation; optical pumping; phase noise; photodetectors; 1/f noise; frequency response; noise conversion; optical power; optical pulse train; phase noise; photodetection; pump modulation; relative intensity noise; Intensity noise; mode-locked laser; phase noise; photodetector and pump modulation;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2011.2109060

Filename

5703108