Optical modulator and optical integrated system

Abstract

The invention relates to the field of photon integrated circuits, and provides an optical modulator and an optical integrated system, which can restrain phase deviation caused by carrier diffusion. The optical modulator comprises at least one section of phase shifter; the phase shifter comprises a waveguide channel for transmitting optical signals, and a P-type doped region and an N-type doped region which are positioned on two opposite sides of the waveguide channel, in the waveguide channel, an undoped intrinsic region is arranged between the P-type doped region and the N-type doped region; at least one end of the two ends of the intrinsic region or a position close to the at least one end of the two ends of the intrinsic region is provided with a blocking structure for blocking carriers from diffusing out of the intrinsic region along the waveguide propagation direction, so that the phase deviation caused by carrier diffusion can be inhibited, and the electric crosstalk between adjacent phase shifters can be inhibited; and modulation signal distortion caused by the electric crosstalk is avoided. Furthermore, the reliability and the precision of the photon integration system are improved.

Description

technical field [0001] The invention relates to the field of photonic integrated circuits, and more specifically, to an optical modulator and an optical integration system. Background technique [0002] Artificial Neural Network (ANN) abstracts the human brain neuron network from the perspective of information processing, establishes a certain calculation model, and forms different networks according to different connection methods. That is to say, a neural network is an operational model consisting of a large number of nodes (or neurons) connected to each other. Each node represents a specific output function, called the activation function. Each connection between two nodes represents a weighted value for the signal passing through the connection, called weight, which is equivalent to the memory of the artificial neural network. The output of the network varies according to the way the network is connected, the weight value and the activation function. The network itsel...

AI Technical Summary

Problems solved by technology

However, since the carriers in the waveguide core region of the PIN junction may diffuse along the waveguide propagation direction, electrical crosstalk occurs between adjacent phase shifters

The electrical crosstalk can lead to distortion of the modulation signal, thereby affecting the performance of photonic integrated systems

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