Title :
Conversions of the microwave subcarriers of digital signals in optical links
Author :
Le Guennec, Y. ; Cabon, B. ; Maury, G.
Author_Institution :
LEMO, CNRS, Grenoble, France
Abstract :
We present a technique for up and down-conversion of microwave (MW) subcarriers of digital signals based on the insertion of a passive all-optical device (unbalanced Mach-Zehnder interferometer) in a frequency modulated (FM) fiber-optic link. This technique has been successfully tested previously with CW signals. Here, simulations of digital transmission, spectral and BER measurements are presented. The technique uses a very low cost passive optical device that is also able to work with WDM and full duplex systems (1.3-1.5 μm). The frequency range of operation is only limited by the direct modulation of the laser diode. BER measurements for BPSK format show low distortions caused by the system
Keywords :
Mach-Zehnder interferometers; error statistics; frequency modulation; microwave links; microwave photonics; phase shift keying; wavelength division multiplexing; 1.3 to 1.5 micron; BER measurements; BPSK format; WDM systems; digital signals; digital transmission; down-conversion; frequency modulated fiber-optic link; frequency range of operation; full duplex systems; laser diode direct modulation; low distortions; microwave subcarriers; optical links; passive all-optical device; simulations; spectral measurements; unbalanced Mach-Zehnder interferometer; up-conversion; very low cost passive optical device; Bit error rate; Costs; Digital modulation; Distortion measurement; Frequency modulation; Microwave devices; Microwave theory and techniques; Optical devices; Optical fiber devices; Optical fiber testing;
Conference_Titel :
Lasers and Electro-Optics Society, 2001. LEOS 2001. The 14th Annual Meeting of the IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7105-4
DOI :
10.1109/LEOS.2001.969167
