Title :
Prospects of highly efficient AlGaInP based surface emitting type ring-LED for 50 and 156 Mb/s POF data link systems
Author :
Dutta, Achyut Kumar
Author_Institution :
Opto-Electron. Res. Labs., NEC Corp., Ibaraki, Japan
fDate :
1/1/1998 12:00:00 AM
Abstract :
The detail design and performance of the surface emitting type visible light emitting diode (LED) is described for using in the plastic optical fiber (POF)-based data links. The diode showed brightness as high as 3.5 mW@100 mA (dc) and also exhibited the beam divergence angle as low as 10° with using of well designed plastic lens. The using of LED with plastic lens helps to attain also the coupling efficiency over 70% with POF. The temperature rise of the ring LED under operation is also estimated to be 9 and 6°C less than the conventional diode at 50 and 35 mA bias currents, respectively. Transmission experiments reveal that the diode is suitable for 50 and 156 Mb/s 100 m POF-based data links
Keywords :
III-V semiconductors; aluminium compounds; brightness; data communication; gallium compounds; indium compounds; lenses; light emitting diodes; optical communication equipment; optical fibre communication; plastics; semiconductor device testing; 100 mA; 156 Mbit/s; 3.5 mW; 50 Mbit/s; 70 percent; AlGaInP; AlGaInP based surface emitting type ring-LED; POF data link systems; POF-based data links; beam divergence angle; bias currents; coupling efficiency; highly efficient; optical polymers; plastic lens design; plastic optical fiber; ring LED; surface emitting type visible light emitting diode; temperature rise; transmission experiments; Couplings; Lenses; Light emitting diodes; Optical fibers; Optical reflection; Optical refraction; Optical surface waves; Optical variables control; Plastics; Stimulated emission;
Journal_Title :
Lightwave Technology, Journal of
