Title :
Full-duplex fiber-optic RF subcarrier transmission using a dual-function modulator/photodetector
Author :
Stöhr, Andreas ; Kitayama, Ken-ichi ; Jäger, Dieter
Author_Institution :
Optoelectron. Dept., Gerhard-Mercator Univ., Duisburg, Germany
fDate :
7/1/1999 12:00:00 AM
Abstract :
An electroabsorption waveguide device is presented as a dual-function modulator/photodetector for application as a cost-effective full-duplex transceiver in radio-frequency (RF) fiber-optic links. The spectral modulation and detection properties of the dual-function transceiver are characterized experimentally. Extinction ratio, insertion loss, and responsivity are 12 dB, 7 dB, and 0.8 A/W, respectively. Modulation and detection bandwidths are both in excess of 17 GHz. By employing a dual-lightwave technique, optimum modulation and detection performance is simultaneously achieved. Furthermore, full-duplex error-free optical transmission of RF subcarrier-multiplexed signals over 10 km nondispersion shifted single-mode fiber is demonstrated and a point-to-multipoint optical ring architecture is proposed
Keywords :
electro-optical modulation; electroabsorption; optical communication equipment; optical fibre networks; optical waveguide components; photodetectors; subcarrier multiplexing; transceivers; wavelength division multiplexing; 10 km; 17 GHz; 256 Mbit/s; 56 Mbit/s; 7 dB; RF fiber-optic links; SCM; WDM; detection properties; dual-function modulator/photodetector; electroabsorption waveguide device; error-free optical transmission; fiber-optic RF subcarrier transmission; full-duplex RF subcarrier transmission; full-duplex transceiver; nondispersion shifted single-mode fiber; point-to-multipoint optical ring architecture; spectral modulation; Bandwidth; Extinction ratio; Insertion loss; Optical fiber devices; Optical losses; Optical modulation; Optical waveguides; Photodetectors; Radio frequency; Transceivers;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
