Deep quantum well electro-absorption modulator

Details Deep quantum well electro-absorption modulator Deep quantum well electro-absorption modulator

2005-06-08

2008-10-28

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C257S018000, C372S045010

Reexamination Certificate

active

07443561

ABSTRACT:
Double well structures in electro-absorption modulators are created in quantum well active regions by embedding deep ultra thin quantum wells. The perturbation introduced by the embedded, deep ultra thin quantum well centered within a conventional quantum well lowers the confined energy state for the wavefunction in the surrounding larger well and typically results in the hole and electron distributions being more confined to the center of the conventional quantum well. The extinction ratio provided by the electro-absorption modulator is typically increased.

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U.S. Appl. No. 11/148,467, filed Jun. 8, 2005, David P. Bour et al.

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