1. Modal gain study for SQW and MQWs based nano-heterostructures.
- Author
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Yadav, Rashmi, Lal, Pyare, Rahman, F., and Alvi, P. A.
- Subjects
- *
QUANTUM wells , *HETEROSTRUCTURES , *NANOSTRUCTURES , *WAVELENGTHS , *INDIUM gallium aluminum , *OPTICAL fiber communication - Abstract
This paper reports the behavior of modal gain versus current density for single quantum well (SQW) and multiple quantum wells (MQWs) based lasing nano-heterostructures of InGaAlAs/InP with in TE mode. The model is based on simple separate confinement heterostructure (SCH). In general, the modal gain has been found to increase with increase in current density. Moreover, less threshold current density is required for SQW but for MQWs, a very high threshold current density is required. The results obtained in the simulation of hetero structures suggest that maximum gain with high quality lasing beam appears at the wavelength of 1.55 μm. The achieved wavelength gives a minimum optical attenuation in the optical fiber communication systems. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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