Reconfigurable spaceborne all-optical add-drop multiplexing equipment

Abstract

The invention discloses reconfigurable space-borne all-optical add-drop multiplexing equipment, and belongs to the technical field of spatial information networks. Spatial light passes through a Cassegrain optical antenna and a coupling lens and sequentially enters a first circulator, a second circulator and a fiber Bragg grating tunable filter, wherein a part of the light is reflected, output via the second circulator and detected by a photo-detector; the remaining transmitted light passes through a fiber Bragg grating filter and a third circulator, enters an optical amplifier, enters the coupling lens via the first circulator and is finally shot out by the Cassegrain optical antenna; the controller tunes a fiber Bragg grating; meanwhile, the controller selects the wavelength of a tunable light source, so that the emitted wavelength of the tunable light source is consistent with the reflected wavelength of the fiber Bragg gratin; the light enters the fiber Bragg grating via the third circulator, is reflected by the fiber Bragg grating tunable filter and multiplexed with the light of other wavelength, enters the coupling lens via the third circulator, the optical amplifier and the first circulator, and is shot out by the Cassegrain optical antenna.

Description

technical field [0001] The invention relates to a reconfigurable space-borne all-optical add-drop multiplexing device, which belongs to the technical field of space information network. Background technique [0002] The space information network serves high-dynamic, broadband real-time transmission in aerospace measurement and control, earth observation, space science experiments, emergency rescue, etc., and can also support ultra-long-distance, long-delay reliable transmission of deep space exploration. The development direction of future space information acquisition and transmission is large capacity and ultra-broadband. Only the high-resolution earth observation system development plan requires a single-load data transmission rate of more than 30Gbit / s. Wavelength division multiplexing networking using laser link technology has become an important mode and development direction for the confidentiality and real-time transmission of large-capacity information in space. ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the existing technology cannot realize the add-drop multiplexing function of the space wavelength division multiplexing laser and is not suitable for the field of space network technology, the present invention provides a reconfigurable space-borne all-optical add-drop multiplexing device, It has simple control, low cost, small insertion loss, high channel isolation, and compact structure. The device can realize multi-channel wavelength reconfigurable functions of the same antenna in and out, and wavelength division multiplexing.

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