Optical switchable system and device
a switchable system and optical switch technology, applied in the direction of battery/fuel cell control arrangement, optical radiation measurement, instruments, etc., can solve the problem of limiting the computer performan
Active Publication Date: 2022-08-18
HEWLETT-PACKARD ENTERPRISE DEV LP
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- Application Information
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Benefits of technology
The patent describes a method for controlling an optical system using a memristor and a ring resonator. The memristor can be programmed to different states using photocurrents generated by a photodetector. This allows for the direct control of optical elements using optical inputs, resulting in higher energy efficiency and better performance. The method can be used for various applications such as optical memory, training of optical neurons, and optical logic computations. The use of a memristor and a ring resonator on a single chip platform provides a more compact and efficient solution for optical computation.
Problems solved by technology
For the conventional digital computation, the memory that stores data communicates with the central processing unit (CPU) through a shared bus, which limits the computer performance as the well-known Von Neumann bottleneck.
Method used
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[0010]Various embodiments disclosed herein provide an optical-to-electrical-to-optical (O-E-O) control method that uses one or more photodetectors coupled to a memristor to control a ring resonator. The photocurrents generated by the one or more photodetectors can be tapped to program the memristor to different states. When the memristor is integrated with the ring resonator, the ring resonator can modulate light based on the state of the memristor.
[0011]Current photonic neural networks use photodiodes to convert optical signals to electric signals, and then input the electric signals into an external electric processing circuit to drive nonlinear optical components. Generally, the electronic circuit elements in these systems are volatile, resulting in energy-efficiency issues of these approaches. In some existing systems, an FPGA may be used to generate patterns for off-chip laser drivers; a hybrid electro-optic circuit may be employed to feed the activation function to the Mach-Ze...
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Abstract
An apparatus includes a photodetector and a memristor coupled to the photodetector. The photodetector is configured to receive and convert optical signals to electrical signals to program the memristor to an on or off state. The apparatus further includes a ring resonator coupled to the memristor and configured to modulate light based on the on or off state of the memristor.
Description
DESCRIPTION OF RELATED ART[0001]For the conventional digital computation, the memory that stores data communicates with the central processing unit (CPU) through a shared bus, which limits the computer performance as the well-known Von Neumann bottleneck. Researches have shown that neuromorphic computing promises a capability to break the Von Neumann bottleneck, such as the memristive neural networks and the photonic neural networks. In this regard, the memristors can be used as artificial synapses due to their non-volatile multi-state conductivity.BRIEF DESCRIPTION OF THE DRAWINGS[0002]The present disclosure, in accordance with one or more various embodiments, is described in detail with reference to the following figures. The figures are provided for purposes of illustration only and merely depict typical or example embodiments.[0003]FIG. 1 is a diagram illustrating an optical system according to one example embodiment.[0004]FIG. 2 is a diagram illustrating optical transmission sp...
Claims
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IPC IPC(8): G01J1/44G02F1/35H01L45/00G01D5/16
CPCG01J1/44G02F1/3501G01J2001/446H01L45/1213G01D5/16G02F1/354B64D27/24B60L58/12B60L58/16B60L2200/10B60L53/80B60L53/66B60L53/62B60L53/63B60L53/67B60L53/305B60L2240/12B60L2240/18B60L2240/62B60L2240/622B60L2240/72B60L2250/14B64F5/60B64F1/362H10N70/257
Inventor YUAN, YUANVAN VAERENBERGH, THOMASTOSSOUN, BASSEMLIANG, DI
Owner HEWLETT-PACKARD ENTERPRISE DEV LP