Patent Number: 6,310,719

Title: Semi conductor optical amplifier

Abstract: The invention relates to a semi-conductor optical amplifier insensitive to the polarization of light. The active layer (20) of this amplifier is made up of an alternating series of solid sub-layers alternately under tensile stress (21) and compressive stress (22) and having the same forbidden band-width. The sub-layers under tensile stress (21) favour the propagation of the TM mode of polarization of light and the sub-layers under compression (22) favour the propagation of the TE mode of polarization of light. In addition, the thicknesses of the sub-layers have values which ensure equal gains G(TE) and G(TM) for the active layer.

Inventors: Goldstein; Leon (Chaville, FR), Emery; Jean-Yves (Palaiseau, FR), Gaborit; Fabienne (Limours, FR)

Assignee: Alcatel

International Classification: H01S 5/50 (20060101); H01S 5/00 (20060101); H01S 5/32 (20060101); H01S 003/00 ()

Expiration Date: 10/30/2018