Title :
Optoelectronic equalisation
Author_Institution :
TRLabs, Edmonton, Alta., Canada
fDate :
4/1/1994 12:00:00 AM
Abstract :
The prospect of using optoelectronic transversal equalisers to compensate chromatic and intermodal dispersion in fibre in the process of detection is analysed, taking into consideration coupling between tap weights and their frequency response. With demonstrated Metal-Semiconductor-Metal variable sensitivity detectors, a simple model indicates the possibility of significant extension of length limits set by dispersion. Multimode systems carrying 1 Gb/s on typical fibre might be extended by a factor of about eight and monomode systems operating with directly driven lasers to carry 10 Gb/s at 1.55 micron wavelength by a factor about three. Such equalisation operates on the detected power rather than the optical field, requires no additional high speed receiver circuitry and is adaptable to link conditions.<>
Keywords :
equalisers; metal-semiconductor-metal structures; optical dispersion; optical fibres; optical filters; photodetectors; 1 Gbit/s; 1.55 micron; 10 Gbit/s; Metal-Semiconductor-Metal variable sensitivity detectors; chromatic dispersion; compensation; directly driven lasers; fibre; frequency response; intermodal dispersion; length; link; model; monomode systems; multimode systems; optoelectronic transversal equalisers; power detection; tap weights; Chromatic dispersion; Circuits; Detectors; Equalizers; Fiber lasers; Frequency response; High speed optical techniques; Laser modes; Optical receivers; Optical sensors;
Journal_Title :
Photonics Technology Letters, IEEE
