Eur. Phys. J. Appl. Phys.
Volume 44, Number 3, December 2008
|Page(s)||255 - 259|
|Published online||06 December 2008|
Modulated noisy light propagated on dispersive fiber in optical links
Shiraz University of Technology, Modarres Boulevard, P.O. Box 71555-313,
Corresponding author: email@example.com
Revised: 13 July 2008
Accepted: 27 August 2008
Published online: 6 December 2008
The intensity spectrum of modulated noisy light on optical microwave signal processing and on conversion of FM noise to intensity noise in optical links is investigated theoretically and experimentally with a good agreement. We have applied a model that uses a 1550 nm distributed feedback (DFB) laser and an unbalanced Mach-Zehnder interferometer (UMZI) considering the external phase modulator. Numerical calculations show the influence of the phase modulation index, modulation frequency, and interferometric delay in the phase-to-intensity noise conversion by lowest-order group-velocity dispersion in optical fiber. The results can be employed to estimate the influence of the chromatic dispersion in phase-to-intensity noise conversion, which use either self-delayed interferences or interferometers.
PACS: 42.62.-b – Laser application / 42.60.-v – Laser optical systems: design and operation / 42.79.-e – Optical elements, devices, and systems
© EDP Sciences, 2008
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