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A Fiber Optical Frequency Transfer Method Based on Remote End Compensation

A technology of frequency transmission and fiber optics, which is applied in the field of fiber optics 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: 2018-02-23
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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  • A Fiber Optical Frequency Transfer Method Based on Remote End Compensation
  • A Fiber Optical Frequency Transfer Method Based on Remote End Compensation
  • A Fiber Optical Frequency Transfer Method Based on Remote End Compensation

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Embodiment Construction

[0027] The optical fiber optical frequency transmission method based on the remote end compensation of 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 mix the local end The light is transmitted to the remote end, where an accurate measurement of fiber noise is achieved. 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 fiber A again, and the optical signal returned to the local end is recorded as This return opti...

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Abstract

The invention discloses an optical fiber optical frequency transmission method based on remote end compensation, which is characterized in that, 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 one to connect the local end and the remote end Optical fiber B at the end transmits the beat frequency detection light at the local end to the remote end, and realizes accurate measurement of fiber optic noise at the remote end. Under the condition of ensuring the same transmission accuracy, the optical frequency transmission device of the present invention can greatly simplify the sending device, which is beneficial to expand to single-point to multi-point transmission and further construct topological 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...

Claims

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Application Information

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Patent Type & Authority Patents(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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