Title :
Optical frequency synthesis for high spectral efficiency WDM transmission
Author :
Seeds, A.J. ; Silva, C.F.C.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK
Abstract :
In this paper an optical frequency synthesis technique using optical injection phase-locked loop is discussed. An optical frequency comb generator produces a complete set of channel frequencies is extracted from the comb spectrum using an active filtering arrangement, based on the combined use of injection locking and phase locking in an optical injection phase lock loop (OIPLL). This approach eliminates the wide bandwidth, short (<1 ns) loop propagation delay design constraints of conventional optical phase lock loops for use with non line-narrowed semiconductor lasers.
Keywords :
channel spacing; delays; optical communication; optical filters; optical frequency conversion; optical phase locked loops; semiconductor lasers; wavelength division multiplexing; WDM transmission; active filtering; channel frequency; comb spectrum; high spectral efficiency; injection locking; optical frequency comb generator; optical frequency synthesis; optical injection phase lock loop; phase locking; propagation delay; semiconductor laser; Active filters; Bandwidth; Filtering; Frequency synthesizers; Injection-locked oscillators; Optical design; Optical filters; Phase locked loops; Propagation delay; Wavelength division multiplexing;
Conference_Titel :
Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on
Print_ISBN :
0-7803-7734-6
DOI :
10.1109/CLEOE.2003.1313579