A review study of some optical characteristics of superluminescent light emitting diode

In this paper, some optical characteristics of superluminescent light emitting diode (SLED) have been studied. The output power of SLED has been described by assuming a uniform carrier density distribution and zero reflection from the faces. In SLEDs, the the total optical power depends on the drive current and the output intensity, does not exhibit a sharp threshold. Typical values for SLED modules are for the optical bandwidth between 5 nm and 100 nm with central wavelengths covering the range between 400 nm and 1700 nm. The structure and the material composition used for the SLED chip affect the gain.