Semiconductor optical modulator having a quantum well...

Details Semiconductor optical modulator having a quantum well... Semiconductor optical modulator having a quantum well...

2007-02-13

2007-02-13

Ben, Loha (Department: 2873)

Optical: systems and elements

Optical modulator

C359S240000, C359S241000, C359S245000, C359S248000, C359S321000, C372S045010, C372S045012, C372S050100, C372S096000, C257S014000, C257S017000, C257S018000, C257S096000

Reexamination Certificate

active

11141100

ABSTRACT:
An optical modulator comprises a first waveguide layer and a barrier layer, and a quantum well layer sandwiched between the first waveguide layer and the barrier layer, where the quantum well layer has a graded composition that varies the bandgap energy of the quantum well layer between a minimum bandgap energy and the bandgap energy of at least one of the first waveguide layer and the barrier layer.

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Search report from corresponding application number EP 06 01 0549.
“Quantum-Confined Stark Effect in Graded-Gap Quantum Wells” Journal of Applied of Physics, American Institute of Physics. New York, US, vol. 62, No. 8, Oct. 15, 1987 (Oct. 15, 1987), pp. 3360-3365, XP000676251 ISSN: 0021-8979.

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