Space light efficient automatic coupling device based on photon lantern and realization method thereof

Abstract

The invention discloses a space light efficient automatic coupling device based on a photon lantern and a realization method thereof. The device includes a coupling structure based on the photon lantern, a coupling lens, a piezoelectric ceramic three-dimensional displacement table, a photoelectric detector, a data processing module, a computer, and the like. The coupling structure based on the photon lantern is formed by drawing large-core diameter plastic-clad multimode optical fibers arranged in hexagonal arrays, and the end face of the photon lantern is designed as an arc-shaped structure.The whole structure is encapsulated by capillaries, and the tail end is fused with single-mode optical fibers. The position of the photon lantern is dynamically adjusted in real time by receiving theintensity of light signals as a feedback to ensure that the coupling is at a high level. The whole device adopts a closed-loop feedback, is stable in performance, can resist interference caused by factors of platform vibration and the like, and has high environmental adaptability.

Description

technical field [0001] The invention relates to the field of space optical communication, in particular to applying a photon lantern structure to space light coupling technology. The invention combines the characteristics of the photon lantern with a large-area receiving mode field, and uses an electronically controlled piezoelectric ceramic three-dimensional mobile platform as an auxiliary to design an automatic space optical coupling device, which can be used in technical fields such as interstellar laser communication and astronomical observation. Background technique [0002] The photonic lantern is a tapered adapter, which is formed by embedding single-mode fiber into the base material through tapering, and light can be coupled between multimode fiber and single-mode fiber through the tapered adapter. The photon lantern is actually a mode converter, or it can be said to be a mode split / combiner. The single-mode waveguide and the multi-mode waveguide are connected throu...

AI Technical Summary

Problems solved by technology

The numerical aperture of single-mode fiber is limited, the core diameter area is small, and the size of the coupling spot is quite different, and the received optical power is limited

Moreover, this type of device is relatively complicated, and it is difficult to control the angle of incident light when adjusting the position of the swing mirror in the spatial optical path.

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