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A transceiver and optical time-frequency transmission device

A transceiver, laser transceiver technology, applied in electromagnetic transceivers, transmission systems, electromagnetic transmitters and other directions, can solve problems such as lack of flexibility

Active Publication Date: 2021-07-06
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, practical high-precision optical time-frequency transmission is mainly realized in optical fiber networks, but it is insufficient in terms of flexibility.

Method used

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  • A transceiver and optical time-frequency transmission device
  • A transceiver and optical time-frequency transmission device
  • A transceiver and optical time-frequency transmission device

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Embodiment Construction

[0031] In order to make the technical solutions and advantages in the embodiments of the present application clearer, the exemplary embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only part of the embodiments of the present application, and Not an exhaustive list of all embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0032] In the prior art, optical time-frequency transmission is mainly realized in optical fiber network. After analysis and research, it is found that the flexibility of time-frequency transmission using optical fiber network is poor, and the resource consumption is serious, which is difficult to meet the requirements of modern optical time-frequency transmission. Therefore, this proposal proposes a free-space opt...

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Abstract

The solution provides a transceiver and an optical time-frequency transfer device, wherein the transceiver includes: a modem, which generates a FlexBOC modulation signal based on a flexibly configured offset binary carrier FlexBOC modulation strategy; and / or, based on a FlexBOC demodulation strategy , demodulate the photoelectric signal to obtain time-frequency data; the laser transceiver unit transmits the laser signal generated based on the FlexBOC modulation signal; and / or converts the received external laser signal into an electrical signal. The technical solution described in this application adopts flexibly configured offset binary carrier (FlexBOC) modulation and demodulation technology, which can not only overcome the multipath interference factors in radio time-frequency transmission technology, but also realize picosecond-level free-space optical two-way precision time-frequency transmission , and can effectively reduce the occupied bandwidth and greatly reduce the bandwidth requirement.

Description

technical field [0001] The present application relates to the field of optical time-frequency transmission, in particular to a transceiver and a free-space picosecond-level optical time-frequency transmission device. Background technique [0002] In recent years, positioning, navigation and timing capabilities and technologies have promoted the rapid development of many fields such as people's livelihood activities, finance and trade, traffic management, power dispatching, and logistics. Among these technologies, timing services provide a solid foundation for the others. In recent years, the performance of optical atomic clocks has continuously improved and achieved unprecedented stability and precision, far exceeding the needs of the above applications. Therefore, the time-frequency transmission technology has become the bottleneck for improving the time service capability. [0003] The time-frequency transfer technology using microwave radio means is becoming more and mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/40H04B10/516H04B10/50
CPCH04B10/40H04B10/503H04B10/516
Inventor 杨宏雷王海峰王学运易航王宏博张升
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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