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High-order phase-based wide-field laser signal input optical fiber device and method

A laser signal, wide field of view technology, applied in optics, light guides, optical components, etc., can solve problems that cannot meet engineering applications, cannot meet the needs of fast response and low-voltage work, and achieve the effect of facilitating technical implementation and reducing losses

Active Publication Date: 2020-06-26
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

Similar to the microwave phased array antenna, the laser phased array can be directly used at the feed source of the optical system to realize the laser signal input into the optical fiber with a large field of view. However, this technology is still in the development stage and cannot meet the needs of practical engineering applications. The reason is that the current mainstream optical phased array devices cannot meet the requirements of fast response and low voltage operation

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  • High-order phase-based wide-field laser signal input optical fiber device and method
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  • High-order phase-based wide-field laser signal input optical fiber device and method

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Embodiment Construction

[0048] Microwave phased array antennas often insert a time-varying linear phase on the array to perform beam scanning. Similarly, high-order phases can also be inserted on the array to achieve beam broadening. In principle, the range of beam broadening can reach beam scanning range. This disclosure applies the principle of phased array antenna to realize beam broadening to wide-field laser signal input optical fiber, and provides a device and method for wide-field laser signal input optical fiber based on high-order phase. The conversion device from the free space of the field of view to the optical fiber inserts a high-order phase into the laser signal, so that the wide-field laser signal is received into the target optical fiber, and the beam broadening function is realized.

[0049] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with specific ...

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Abstract

The disclosure provides a wide field of view laser signal input optical fiber apparatus and method based on a higher-order phase. The apparatus is arranged at a feeding source of an optical system andcomprises a converting device and a target optical fiber, wherein laser signals of a wide field of view insert the higher-order phase in the space through the converting device and are input to the target optical fiber, and the higher-order phase is second order and or more. A wide field of view laser signal input optical fiber method based on the high-order phase is further provided based on theapparatus. According to the apparatus and the method, the laser signals insert the higher-order phase in the space so that the laser signals of the wide field of view are input to the target opticalfiber, and the wave beam broadening function is realized.

Description

technical field [0001] The present disclosure relates to the technical field of laser signal receiving optical fiber, in particular to a high-order phase-based wide-field laser signal receiving optical fiber device and method. Background technique [0002] In the coherent laser radar using fiber frequency mixing, especially the synthetic aperture laser radar, it is of great significance to expand the instantaneous observation field of view. [0003] At present, lidar mostly adopts the receiving method of area array or linear array detectors to expand the receiving field of view. This receiving method has high spatial angular resolution, but due to the need to use photodetector arrays and multi-channel signal processing, the amount of data If it is used for heterodyne coherent detection with the local oscillator, it is very difficult to realize the technology. [0004] Synthetic aperture lidar (SAL) does not require high spatial angular resolution, and it has the conditions ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/42
CPCG02B6/4204
Inventor 李道京胡烜赵绪锋
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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