Very low phase noise optical links: experiments and theory

Additive phase noise is studied in directly modulated optical links (1.55 /spl mu/m DFB laser and PIN photodiode). Upconversion close to the microwave carrier, of the very low frequency noise of the laser, is calculated and verified experimentally. Noise sources are identified and included in the mo...

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Published in1999 IEEE MTT-S International Microwave Symposium Digest (Cat. No.99CH36282) Vol. 4; pp. 1809 - 1812 vol.4
Main Authors Bibey, M.-B., Deborgies, F., Krakowski, M., Mongardien, D.
Format Conference Proceeding Journal Article
LanguageEnglish
Published IEEE 1999
Subjects
Additive noise
Laser modes
Laser noise
Laser theory
Low-frequency noise
Masers
Optical fiber communication
Optical noise
Phase noise
Signal to noise ratio
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Summary:Additive phase noise is studied in directly modulated optical links (1.55 /spl mu/m DFB laser and PIN photodiode). Upconversion close to the microwave carrier, of the very low frequency noise of the laser, is calculated and verified experimentally. Noise sources are identified and included in the model to evaluate the microwave phase noise and then the noise to signal ratio in terms of phase fluctuations. Good agreement is obtained between calculations and measurements. Very good additive phase noise values have been obtained at 10 kHz offset: -148 dBc/Hz and -139 dBc/Hz at 3 GHz and 9 GHz respectively.
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ISBN:0780351355
9780780351356
ISSN:0149-645X
DOI:10.1109/MWSYM.1999.780324