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Optical properties of a GaAlAs superluminescent diode

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2 Author(s)
Dutta, N.K. ; AT&T Bell Laboratories, Murray Hill, NJ, USA ; Deimel, P.P.

The optical properties of a GaAlAs superluminescent diode (SLD) are described. The spectra of this device exhibit a large number of longitudinal modes. The coupling efficiency into a 0.23 NA 50 μm diameter graded index fiber is ∼ 30 percent. The current required for constant light output at a temperature T can be written as I(T) \sim I_{0} \cdot \exp (T/T_{2}) where T_{2} \sim 120 K. A model of the SLD is described.

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Quantum Electronics, IEEE Journal of  (Volume:19 ,  Issue: 4 )