DocumentCode
1067176
Title
Very high radiance edge-emitting LED
Author
Ettenberg, Michael ; Kressel, Henry ; Wittke, James P.
Author_Institution
RCA Laboratories, Princeton, NJ, USA
Volume
12
Issue
6
fYear
1976
fDate
6/1/1976 12:00:00 AM
Firstpage
360
Lastpage
364
Abstract
In this paper we describe a new light-emitting diode (LED) whose radiance is 1000 W/cm2sr, an order of magnitude higher than any previous LED. The LED is an (AlGa)As double-heterojunction edge-emitting structure. This structure acts as a waveguide for the internally generated light, and with appropriate Al concentration difference at the heterojunctions ( 
) and active region width (∼500Å), the radiation pattern perpendicular to the junction can be less than 30° (FWHM). For fiber-optic communications this LED is capable of coupling 850 μw, at a coupling loss of only -10 dB into a 0.14-numerical-aperture (NA), 90-μm-diam low-loss fiber. The LED is capable of being directly modulated at 250 MHz and has a spectral width of less than 300 Å.
) and active region width (∼500Å), the radiation pattern perpendicular to the junction can be less than 30° (FWHM). For fiber-optic communications this LED is capable of coupling 850 μw, at a coupling loss of only -10 dB into a 0.14-numerical-aperture (NA), 90-μm-diam low-loss fiber. The LED is capable of being directly modulated at 250 MHz and has a spectral width of less than 300 Å.Keywords
Artificial intelligence; Etching; Gallium arsenide; Heterojunctions; Light emitting diodes; Optical fiber communication; Optical fiber losses; Optical fibers; Optical waveguides; Waveguide junctions;
fLanguage
English
Journal_Title
Quantum Electronics, IEEE Journal of
Publisher
ieee
ISSN
0018-9197
Type
jour
DOI
10.1109/JQE.1976.1069158
Filename
1069158
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