Title :
Temperature and modulation characteristics of resonant-cavity light-emitting diodes
Author :
Schubert, E.Fred ; Hunt, N.E.J. ; Malik, Roger J. ; Micovic, Miroslav ; Miller, Douglas L.
Author_Institution :
AT&T Bell Labs., Murray Hill, NJ, USA
fDate :
7/1/1996 12:00:00 AM
Abstract :
Resonant-cavity light-emitting diodes (RCLED) are novel, high-efficiency light-emitting diodes which employ optical microcavities. These diodes have higher intensities and higher spectral purity as compared to conventional LEDs. Analytical formulas are derived for the enhancement of the spontaneous emission along the optical axis of the cavity. The design rules for high-efficiency operation of RCLEDs are established. The temperature dependence of the emission intensity is analyzed in the range 20-80° and it is described by an exponential dependence with a characteristic temperature of 112 K. The modulation characteristics of RCLEDs exhibit 3 dB frequencies of 580 MHz. Eye diagrams at transmission rates of 622 Mb/s are wide open indicating the suitability of RCLEDs for high-speed data transmission
Keywords :
Debye temperature; III-V semiconductors; electro-optical modulation; gallium arsenide; indium compounds; light emitting diodes; optical design techniques; optical resonators; semiconductor quantum wells; spontaneous emission; 112 K; 622 Mbit/s; LED; characteristic temperature; design rules; emission intensity; exponential dependence; eye diagrams; high-efficiency light-emitting diodes; high-efficiency operation; high-speed data transmission; higher intensities; higher spectral purity; modulation characteristics; optical axis; optical microcavities; resonant-cavity light-emitting diodes; spontaneous emission; temperature characteristics; temperature dependence; transmission rates; High speed optical techniques; Intensity modulation; Light emitting diodes; Microcavities; Optical modulation; Resonance; Spontaneous emission; Stimulated emission; Temperature dependence; Temperature distribution;
Journal_Title :
Lightwave Technology, Journal of
