Title :
Stabilization and Control of the Wavelength of GaN LED
Author :
Ghazanfar, S. H A ; Deming, Liu ; Alla, Ahmed N Abd ; Hairong, Liu ; Bhatti, M. Akram
Author_Institution :
Dept. of Optoelectron. Eng., Huazhong Univ. of Sci. & Technol., Wuhan
Abstract :
In recent years, blue light emitting diodes of III-nitride semiconductors have been of much interest. In this paper we present stabilization and control of the wavelength of GaN LED which is used as a source of light for optical data communication. Wavelength of a LED varies with the change in the amount of current passing through it and the change in its pn junction temperature. It is proposed to use a feedback circuit to control the current passing through a LED and piezoelectric fan to control its pn junction temperature. Simulation results are shown good and stabilization and control of the wavelength of the LED. Hence the distortion, produced during data communication through an optical fiber, is reduced
Keywords :
gallium compounds; light emitting diodes; optical variables control; stability; GaN; GaN LED; III-nitride semiconductors; blue light emitting diodes; feedback circuit; optical data communication; optical fiber; pn junction temperature; Communication system control; Data communication; Gallium nitride; Light emitting diodes; Lighting control; Optical control; Optical distortion; Optical feedback; Stimulated emission; Temperature control;
Conference_Titel :
Emerging Technologies, 2006. ICET '06. International Conference on
Conference_Location :
Peshawar
Print_ISBN :
1-4244-0502-5
Electronic_ISBN :
1-4244-0503-3
DOI :
10.1109/ICET.2006.335996
