Title :
Differential detection in cable television
Author_Institution :
Harmonic Inc., Sunnyvale, CA, USA
Abstract :
Analog fiber links often use externally modulated 1550 nm transmitters and EDFAs to obtain high performance over long distances. The use of differential detection eliminates two signal-degrading effects associated with such transmission phase to amplitude noise conversion, and fiber-induced composite second order distortion (CSO). In addition, the use of differential detection boosts the net carrier-to-noise ratio (CNR) by 3 dB, and enables very high analog performance over distances in excess of 50 km, without the use of optical amplifiers.
Keywords :
cable television; differential detection; optical fibre amplifiers; optical fibre subscriber loops; optical noise; optical transmitters; telecommunication channels; 1550 nm; 50 km; EDFAs; amplitude noise conversion; analog fiber links; cable television; differential detection; externally modulated 1550 nm transmitters; fiber-induced composite second order distortion; high performance; long distances; net carrier-to-noise ratio; optical amplifiers; signal-degrading effects; transmission phase; very high analog performance; Cable TV; Noise level; Optical distortion; Optical fiber cables; Optical noise; Optical transmitters; Phase detection; Phase distortion; Phase noise; Signal detection;
Conference_Titel :
Nanostructures and Quantum Dots/WDM Components/VCSELs and Microcavaties/RF Photonics for CATV and HFC Systems, 1999 Digest of the LEOS Summer Topical Meetings
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-5633-0
DOI :
10.1109/LEOSST.1999.794746
