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System for realizing closed-loop control of different types of integrated photonic systems

A technology of integrated photonics and closed-loop control, applied in the direction of program control, computer control, general control system, etc., can solve the problems of low integration, achieve high integration, low power consumption, and improve competitiveness

Active Publication Date: 2021-04-13
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a system for realizing closed-loop control of different types of integrated photonic systems, the purpose of which is to solve the technical problems of the prior art due to low integration

Method used

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  • System for realizing closed-loop control of different types of integrated photonic systems
  • System for realizing closed-loop control of different types of integrated photonic systems
  • System for realizing closed-loop control of different types of integrated photonic systems

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Embodiment 1

[0037] like Image 6 As shown, in this embodiment, there are 2 types of integrated photonic systems to be controlled, and the number of each type of integrated photonic system is 1. Wherein, the controlled integrated photonic systems are polarization control integrated photonic system 206-1 and Mach-Zehnder modulator 206-2 respectively. By controlling the polarization control integrated photonic system 206-1, the conversion of any polarization state input light to a single polarization state output light can be realized; by controlling the bias state of the Mach-Zehnder modulator 206-2, the modulator can be stabilized at the best working point. When the above two integrated photonic systems are in the best working state or realize complete functions, their feedback signals are at the minimum.

[0038] For the polarization control integrated photonic system 206-1, the input light 233 of any polarization state passes through the polarization rotating beam splitter 221 to gener...

Embodiment 2

[0049] like Figure 7 As shown, in this embodiment, there are 2 types of integrated photonic systems to be controlled, and the number of each type of integrated photonic system is 1. Among them, the controlled integrated photonic systems are respectively the microring resonator 206-1 and the Pound-Drever-Hall laser frequency stabilization system 206-2. By controlling the resonant wavelength of the microring resonator 206-1, precise filters or optical switches can be realized; by controlling the resonant wavelength of the tunable laser in the Pound-Drever-Hall laser frequency stabilization system 206-2, the Laser Phase Noise. When the above two integrated photonic systems are in the best working state or realize complete functions, their feedback signals are at the maximum value.

[0050] For the microring resonator 206-1, after the input light 301 with a fixed wavelength enters the resonator, two optical signals are generated due to the resonant structure, one of which is us...

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Abstract

The invention discloses a system for realizing closed-loop control of different types of integrated photonic systems. The system comprises a control circuit part and a plurality of integrated photonic systems, wherein the control circuit part comprises a feedback signal extraction unit, an analog front end part, a digital control part, an output driving part and a sequential control part, the number of the types of the integrated photonic systems is j, the number of the integrated photonic systems and the number of the feedback signal extraction units are both k, the output end of the ith integrated photonic system is connected with the input end of the ith feedback signal extraction unit, the ith feedback signal extraction unit, the analog front end part, the digital control part, the output driving part and the ith integrated photonic system are sequentially connected in series to form a closed loop, i is equal to 1, 2,..., k, k is greater than or equal to j, and k closed loops are formed in total. According to the system, the first to kth integrated photonic systems are sequentially adjusted based on the maximum value locking through the control circuit part, so that the area is small, the power consumption is low, the integration degree is high, and the system is suitable for controlling large-scale integrated photonic systems.

Description

technical field [0001] The invention belongs to the field of integrated photonic system control, and more specifically relates to a system for realizing closed-loop control of different types of integrated photonic systems. Background technique [0002] As semiconductor process nodes approach physical size limits, Moore's Law is coming to an end. As a potential development path in the post-Moore era, integrated photonics has received extensive research and attention. For pure on-chip integrated active optical devices or systems, due to environmental disturbances such as temperature or limitations in their own structure and architecture, they often cannot directly work at the optimal operating point or achieve complete functions, so control circuits are usually required for assistance or control. For example, for a silicon-based Mach-Zehnder modulator, a bias control circuit is required to control its static operating point to compensate for process deviations and avoid bei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/25257
Inventor 谭旻汪宇航汪志城明达
Owner HUAZHONG UNIV OF SCI & TECH
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