Low-power consumption optical synapse device based on vertical cavity semiconductor optical amplifier

A technology of optical amplifiers and semiconductors, applied in the field of optical information processing, can solve the problems of large, tens to hundreds of milliamps, which cannot meet the low power consumption requirements of photonic neural networks, and achieve the effect of low power consumption

Active Publication Date: 2020-02-14
XIDIAN UNIV
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Problems solved by technology

Under normal circumstances, the operating current of semiconductor optical amplifiers is relatively large, ranging fro

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  • Low-power consumption optical synapse device based on vertical cavity semiconductor optical amplifier
  • Low-power consumption optical synapse device based on vertical cavity semiconductor optical amplifier
  • Low-power consumption optical synapse device based on vertical cavity semiconductor optical amplifier

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing the embodiment of the present invention is described in detail: present embodiment is carried out under the premise of technical solution of the present invention, has provided detailed implementation mode and concrete operation process, but protection scope of the present invention is not limited to subordinates the embodiment.

[0015] Such as figure 1 As shown, the present invention consists of two vertical cavity surface emitting semiconductor lasers VCSEL1, VCSEL2, adjustable optical delay line VODL, two optical couplers OC1, OC2, three-port optical ring device Circulator, vertical cavity semiconductor optical amplifier VCSOA, Bias and TEC providing bias current and temperature control for vertical cavity semiconductor optical amplifier, two bandpass filters λ 1 ,λ 2 composition. Described VCSEL1, VCSEL2 respectively output a light pulse; Wherein the light pulse of VCSEL2 output forms time difference with the light ...

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Abstract

The invention discloses a low-power consumption optical synapse device based on a vertical cavity semiconductor optical amplifier. The invention belongs to the technical field of optical information processing, and is mainly applied to the construction of a photon pulse neural network. The device as shown in the figure includes two vertical cavity surface emitting semiconductor lasers VCSEL1 and VCSEL2, a dimmable delay line VODL, two optical couplers OC1 and OC2, a three-port optical circulator Circulator, a vertical cavity semiconductor optical amplifier VCSOA, a Bias and TEC for providing bias current and temperature control for the vertical cavity semiconductor optical amplifier, and two band pass filters lambda1 and lambda2. Light pulses output by the VCSELs are injected into the VCSOA, which proves that the VCSOA has the function of realizing optical synapses. The device of the invention has low power consumption while ensuring the realization of the optical synapse function, theinput power requirement on input signals is low, and the tuning range of a time window is large.

Description

technical field [0001] A low-power optical synapse device based on a vertical cavity semiconductor optical amplifier belongs to the technical field of optical information processing, and in particular relates to a method for realizing low-power optical synapse. Background technique [0002] Compared with the traditional von Neumann system, photonic neuromorphic computing combines the characteristics of photonics and brain-like computing, and has great advantages in terms of power consumption and memory. The photon neural network mainly includes two functional modules: photon pulse neuron and photon synapse. Low power consumption is one of the key requirements for photonic neural network devices. Spike time-dependent plasticity is found to be the main synaptic weight update rule and is highly relevant to learning and memory in the brain. [0003] As far as the current research progress is concerned, the pulse-time-dependent plasticity of the optical domain is mainly achieve...

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Application Information

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IPC IPC(8): G02F3/00G06E3/00
CPCG02F3/00G06E3/006
Inventor 项水英张雅慧龚俊楷
Owner XIDIAN UNIV
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