Title :
Coherent multicarrier lightwave technology for flexible capacity networks
Author_Institution :
Philips Res. Lab., Eindhoven, Netherlands
fDate :
3/1/1994 12:00:00 AM
Abstract :
Highly flexible and survivable networks can be built by allocating optical carriers of heterodyne systems. The basic features of heterodyne systems are reviewed, especially the use of multicarriers, tunability, and selectivity. Then specific application areas that may benefit from flexible multicarrier allocation schemes are discussed. Examples are taken from the RACE Phase II project R2065, coherent optical systems implemented for business traffic routing and access (COBRA). Next, trends and progress in heterodyne systems in general and related key components are summarized, and then examples of ongoing field trials in Europe are discussed. Finally, the coherent multicarrier technology are compared briefly with direct detection multiwavelength technology.<>
Keywords :
broadband networks; light coherence; optical links; optical modulation; subcarrier multiplexing; subscriber loops; Europe; RACE Phase II project R2065; RF signal; broadband subscriber networks; business traffic access; business traffic routing; coherent multicarrier lightwave technology; coherent optical systems; direct detection multiwavelength technology; heterodyne systems; optical carriers; selectivity; tunability; Europe; Frequency conversion; Frequency shift keying; Optical filters; Optical frequency conversion; Optical mixing; Optical receivers; Optical sensors; Optical transmitters; Passband;
Journal_Title :
Communications Magazine, IEEE
