High speed spatial light modulator
OwnerWeidong Zhou, Mingsen Paninventors
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Abstract
A high speed spatial light modulators are described. In one non-limiting example, an optical switching device, comprises a first photonic crystal slab (PCS) layer, a second PCS layer, a graphene layer, a reflector, and a readout integrated circuit. The second PCS layer includes a silicon layer and the graphene layer is positioned in a cavity between the first PCS layer and the second PCS layer. The reflector is deposited on the silicon layer of the second PCS layer. The readout integrated circuit is attached to the reflector. The optical switching device is configured to modulate a surface of the optical switching device to switch between reflection and absorption of an interrogating beam according to an electrical modulated signal.
Claims11
An optical switching device, comprising:
- a first photonic crystal slab (PCS) layer;
- a second PCS layer that includes a silicon layer;
- a graphene layer that is positioned in a cavity between the first PCS layer and the second PCS layer
- a reflector that is deposited on the silicon layer of the second PCS layer;
- a readout integrated circuit that is attached to the reflector;
- and
- wherein the optical switching device configured to modulate a surface of the optical switching device to switch between reflection and absorption of an interrogating beam according to an electrical modulated signal.
A reflective optical phased array structure, comprising:
- an indium tin oxide (ITO) glass electrode;
- a bi-layer photonic crystal slab is attached to the ITO glass electrode;
- a read-out integrated circuit that is configured to control the optical phase array;
- an indium bump positioned between the bi-layer photonic crystal slab and the read-out integrated circuit;
- and
- wherein the reflective optical phased array structure is configured to control a direction of a reflected light beam by modulating a voltage applied to the bi-layer photonic crystal slab.
Dependencies are inferred from the claim text.