Title :
All-optical wavelength conversion by semiconductor optical amplifiers
Author :
Durhuus, Terji ; Mikkelsen, Benny ; Joergensen, Carsten ; Danielsen, Soeren Lykke ; Stubkjaer, Kristian E.
Author_Institution :
Center for Broadband Telecommun., Tech. Univ. Denmark, Lyngby, Denmark
fDate :
6/1/1996 12:00:00 AM
Abstract :
Following a brief introduction to the applications for wavelength conversion and the different available conversion techniques, the paper gives an in depth analysis of cross gain and cross phase wavelength conversion in semiconductor optical amplifiers. The influence of saturation filtering on the bandwidth of the converters is explained and conditions for conversion at 20 Gb/s or more are identified. The cross gain modulation scheme shows extinction ratio degradation for conversion to longer wavelengths. This can be overcome using cross phase modulation in semiconductor optical amplifiers that are integrated into interferometric structures. The first results for monolithic integrated interferometric wavelength converters are reviewed, and the quality of the converted signals is demonstrated by transmission of 10 Gb/s converted signals over 60 km of nondispersion shifted single mode fiber
Keywords :
light interferometers; optical communication equipment; optical fibre communication; optical filters; optical frequency conversion; optical saturation; semiconductor lasers; 10 Gbit/s; 20 Gbit/s; 60 km; Gb/s converted signals; all-optical wavelength conversion; converted signals; cross gain; cross gain modulation scheme; cross phase modulation; cross phase wavelength conversion; extinction ratio degradation; interferometric structures; monolithic integrated interferometric wavelength converters; nondispersion shifted single mode fiber; review; saturation filtering; semiconductor optical amplifiers; Bandwidth; Extinction ratio; Filtering; Optical filters; Optical interferometry; Optical saturation; Optical wavelength conversion; Semiconductor optical amplifiers; Stimulated emission; Wavelength conversion;
Journal_Title :
Lightwave Technology, Journal of
