Title :
Wavelength referencing in passive optical networks
Author :
Hil, A.M. ; Blyth, K.J.
Author_Institution :
British Telecom Res. Lab., Ipswich, UK
Abstract :
A method is demonstrated that uses the HDWDM (high-density wavelength-division-multiplexing) channels transmitted from a head-end as a reference comb for upstream transmission. A dual-purpose, grating-based tunable optical filter simultaneously selects the required downstream wavelength channel and automatically generates an identical wavelength as part of a tunable ring laser. This enables all customers to employ identical amplifiers, without requiring a set of distinct laser wavelengths to be accurately manufactured
Keywords :
frequency division multiplexing; optical links; amplifiers; head-end; high-density wavelength-division-multiplexing; passive optical networks; reference comb; tunable optical filter; tunable ring laser; upstream transmission; wavelength referencing; High speed optical techniques; Intelligent networks; Laser tuning; Optical fiber networks; Optical filters; Passive optical networks; Ring lasers; Semiconductor lasers; Tunable circuits and devices; WDM networks;
Conference_Titel :
Communications, 1991. ICC '91, Conference Record. IEEE International Conference on
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-0006-8
DOI :
10.1109/ICC.1991.162433
