Title :
Formation of the refractive index profile in the graded index polymer optical fiber for gigabit data transmission
Author :
Ishigure, Takaaki ; Satoh, Masataka ; Takanashi, Osamu ; Nihei, Eisuke ; Nyu, Takayuki ; Yamazaki, Shuntaro ; Koike, Yasuhiro
Author_Institution :
Fac. of Sci. & Technol., Keio Univ., Yokohama, Japan
fDate :
11/1/1997 12:00:00 AM
Abstract :
Bandwidth characteristics of the large core graded index polymer optical fiber (GI-POF) are theoretically and experimentally clarified. The refractive index profile of the GI-POF was controlled by interfacial-gel polymerization to investigate the relation between the index profile and the bandwidth characteristics. It was experimentally confirmed that the maximum bandwidth of the poly methyl methacrylate (PMMA) base GI-POF is at most 3 GHz for 100 m transmission using a typical laser diode emitting at 650-nm wavelength (3 nm source spectral width) when its refractive index profile is optimized. The maximum bandwidth theoretically estimated by considering both modal and material dispersions is approximately 3 GHz which is exactly the same as the measured value, while higher than 10 GHz for 100 m was expected if only modal dispersion was taken into account. The optimum refractive index profile of the PMMA base GI-POF is theoretically and experimentally clarified by considering the profile dispersion further
Keywords :
gradient index optics; optical fibre dispersion; optical fibres; optical polymers; polymerisation; refractive index; 10 GHz; 100 m; 3 GHz; 650 nm; PMMA; bandwidth characteristics; gigabit data transmission; graded index polymer optical fiber; interfacial-gel polymerization; large core; laser diode; material dispersion; modal dispersion; poly methyl methacrylate; refractive index profile; Bandwidth; Costs; Optical fiber dispersion; Optical fiber networks; Optical fibers; Optical materials; Optical polymers; Plastics; Refractive index; Silicon compounds;
Journal_Title :
Lightwave Technology, Journal of
