What is the purpose of the transition layer and barrier layer in the fabrication of quantum well semiconductor ring lasers?

Arpit Arvind Khandelwal @Arpit-Khandelwal-3

24 October 2013 1 2K Report

Barrier layer above quantum well.

The barrier layer is used as confining layer to guide optical wave through transition layer. Its refractive index must be larger than the refractive index of transition layer in the of slot type waveguides such as quantum wells.

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