Fiber optical frequency transmission method based on compensation of remote end

A technology of frequency transmission and fiber optics, which is applied in the field of fiber optic frequency transmission based on remote end compensation, can solve the problems that are not conducive to large-scale networking and the complexity of the local end, and achieve the effects of expansion, device simplification, and interference avoidance

Active Publication Date: 2015-09-09
NAT TIME SERVICE CENT CHINESE ACAD OF SCI
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Problems solved by technology

With the increase of users, the local end will inevitably become complicated, which is not conducive to large-scale networking
[0009] Aiming at the difficulty of expanding the network in the star network structure of the existing fiber optic frequency transmission technology, a remote end compensation transfer technology is proposed to reduce the complexity of the local end system and facilitate large-scale networking

Method used

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  • Fiber optical frequency transmission method based on compensation of remote end
  • Fiber optical frequency transmission method based on compensation of remote end
  • Fiber optical frequency transmission method based on compensation of remote end

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Embodiment Construction

[0027] The optical fiber optical frequency transmission method based on the compensation of the remote end in the present invention: firstly, the optical signal starts from the local end and is transmitted to the remote end through the transmission optical fiber A, and then uses another optical fiber B connecting the local end and the remote end to transmit the optical signal of the local end to The frequency detection light is transmitted to the remote end, and the accurate measurement of the optical fiber noise is realized at the remote end. The method is specifically:

[0028] The optical signal E starts from the local end, and the initial phase of the optical signal E is After being transmitted to the remote end through the transmission fiber A, the laser phase delay caused by fiber A is The optical signal is denoted as The optical signal is reflected by the optical receiving device at the remote end, and returns to the local end along the original path of optical fib...

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Abstract

The invention discloses a fiber optical frequency transmission method based on compensation of a remote end. The method is characterized in that first of all, optical signals start from a local end and are transmitted to the remote end via a transmission fiber A, then beat frequency probe light of the local end is transmitted to the remote end by use of a fiber B connected with the local end and the remote end, and accurate measurement of fiber noise is realized at the remote end. According to the invention, under the condition that the same transmission precision is guaranteed, a light frequency transmission apparatus can greatly simplify a sending apparatus, facilitates expansion to single-point-to-multipoint transmission and facilitates further construction of a topology network.

Description

technical field [0001] The invention belongs to the technical field of optical fiber transmission, and relates to an optical fiber optical frequency transmission method, in particular to an optical fiber optical frequency transmission method based on remote end compensation. Background technique [0002] Optical fiber can be used to transmit optical carrier frequency signals with high fidelity. At present, the stability of optical frequency transmission reaches the order of 1E-15 / s, and the stability of thousand seconds can reach the order of 1E-19. The transfer accuracy is the highest among all existing frequency transfer technologies. The use of optical fibers to transmit optical frequency signals can not only meet the needs of the time-frequency field, but also can be widely used in scientific and engineering applications such as precision physical constant measurement, very long baseline interferometer (VLBI), and deep space exploration. [0003] When the laser signal i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/2507H04B10/071H04B10/2537
Inventor 刘杰刘涛董瑞芳张首刚
Owner NAT TIME SERVICE CENT CHINESE ACAD OF SCI
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