Optical fiber for dual signal transmission and transmission device and method using the optical fiber

Abstract

The invention relates to a communication and sensing dual-signal transmission optical fiber and a transmission device and method using the optical fiber. The dual-signal transmission optical fiber includes a central core, a ring core and a cladding. The central core is located at the center of the transmission optical fiber, and the ring core is a circle. In a tubular structure, the central core is located in the lumen of the ring core, and the space between the central core and the ring core and the outside of the ring core are all wrapped by cladding. The invention uses the novel optical fiber as a transmission carrier to propose an orthogonal mode mode division multiplexing technology, and transmits sensing and communication signals on the center core and the ring core of the novel optical fiber respectively. In order to achieve continuous monitoring in space, an optical fiber distributed sensing system based on Rayleigh backscattered light is introduced to detect the attenuation of light when it propagates in an optical fiber link according to the relationship between light intensity and time, which can be used in optical fiber Bend detection. Through the fusion of sensing and communication technologies, a synesthesia-integrated optical network system can be designed and applied to the perception and transmission of external information.

Description

Technical field [0001] The present invention relates to light sensing and transmission techniques in the field of communication sensing techniques, and more particularly to orthogonal modes of the transmitting medium, in particular, a transmission device and method for which the optical fiber is applied is, and a transmission device and method for applying the optical fiber. Background technique [0002] The thriving of the Internet, IoT, Artificial Intelligence, Big Data, 5G Mobile Communication Technology, etc., the information transmission rate and capacity of communication links have proposed a higher requirements. At present, as one of the mainstream modes of information transmission, optical communication evolution is performed from multi-channel, high rate, ultra-large capacity, long distance, and the like, and constantly improving transmission capacity and extending transmission distance. Advance, to meet the requirements of future communication services such as ultra-wid...

AI Technical Summary

Problems solved by technology

[0004] In the existing sensing optical fiber, there is no precedent for using Rayleigh scattering to detect optical fiber link loss, bending and other events

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