Variable optical power limiter

Details Variable optical power limiter Variable optical power limiter

2005-01-20

2010-11-23

Le, Uyen-Chau N (Department: 2874)

Optical waveguides

Temporal optical modulation within an optical waveguide

C385S131000, C385S129000

Reexamination Certificate

active

07840098

ABSTRACT:
A variable optical power limiter is disclosed. An apparatus according to aspects of the present invention includes an optical waveguide disposed in semiconductor material. An optical beam is to be directed through the optical waveguide. The optical beam is to generate free carriers in the optical waveguide via two-photon absorption in response to an input power level of the optical beam. A diode structure is disposed in the optical waveguide. The diode structure is coupled to be biased to control free carrier lifetimes of the free carriers in the optical waveguide to set an output power of the optical beam to a clamped output power level in response to the bias of the diode structure.

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