Title :
System impact of the physical length of unapodised chirped fiber Bragg gratings on dispersion compensation
Author :
Rocha, Mônica L. ; Kashyap, Raman ; Souza, Rui F. ; Barros, Miriam R X ; Coral, Claudemir ; Paradisi, Alberto
Author_Institution :
Fundacao CPqD, Campinas, Brazil
Abstract :
It is shown, for the first time, how the amplitude of the group delay ripple, due to a pair of quasi-identical chirped fiber Bragg gratings, can be affected by a small change in the physical length of one of the gratings. It is theoretical and experimentally demonstrated that the dispersion of the gratings can be smoothened by a slight difference in length between them. The pair of gratings is arranged in a 4-port optical circulator, in a cascaded configuration. System simulations indicate that apodisation may be improved using such a scheme. This has implications for dispersion compensation in high bit-rate transmission systems
Keywords :
Bragg gratings; chirp modulation; compensation; optical circulators; optical communication equipment; optical fibre dispersion; optical images; optical modulation; 4-port optical circulator; apodisation; cascaded configuration; dispersion compensation; group delay ripple amplitude; high bit-rate transmission systems; physical length; quasi-identical chirped fiber Bragg gratings; system impact; unapodised chirped fiber Bragg gratings; Bandwidth; Bragg gratings; Chirp; Delay effects; Erbium; Erbium-doped fiber amplifier; Fiber gratings; Insertion loss; Optical fiber polarization; Optical losses;
Conference_Titel :
Microwave and Optoelectronics Conference, 1999. SBMO/IEEE MTT-S, APS and LEOS - IMOC '99. International
Conference_Location :
Rio de Janeiro
Print_ISBN :
0-7803-5807-4
DOI :
10.1109/IMOC.1999.866245
