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Wavelength tag information analysis device and analysis method

A wavelength label and information analysis technology, applied in the field of optical communication, can solve the problem of result error, unable to correctly detect the frequency related information of the wavelength label, etc.

Active Publication Date: 2012-07-25
ZTE CORP
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Problems solved by technology

[0007] However, the FFT algorithm has a fence effect when analyzing the frequency of the wavelength label signal, that is, when the low-frequency frequency sent by the source node has a deviation, the detection result of the receiving end has certain errors, and even the frequency correlation of each wavelength label cannot be detected correctly. information

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  • Wavelength tag information analysis device and analysis method
  • Wavelength tag information analysis device and analysis method
  • Wavelength tag information analysis device and analysis method

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Embodiment Construction

[0031] In this solution, a Chirp-Z Transform (CZT for short) transformation is introduced into the frequency analysis of the wavelength label technology to overcome the defects of using the FFT transformation.

[0032] figure 1 It is a diagram of a general device for analyzing wavelength label information, and the device includes an optical splitter (11), an optical conversion unit (12), a signal conditioning unit (13), an ADC unit (14), and a logic processing unit (15).

[0033] Among them, the optical splitter (11) divides the received optical signal carrying the wavelength label into the optical conversion unit (12), and the ratio of the optical signal distributed to the optical conversion unit (12) by the conventional optical splitter is 1%. ~5%. The optical-to-electrical unit (12) converts the received optical signal into an electrical signal and sends it to the signal conditioning unit (13), and the signal conditioning unit (13) processes the received electrical signal,...

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Abstract

The invention discloses a wavelength tag information analysis device and an analysis method. The received sampling signals are subjected to chirp-Z transform (CZT) analysis continuously by J times by a logic processing unit, and the frequency-related information of the continuous J times of each wavelength tag frequency in the sampling signals is counted to resolve wavelength tag information, wherein J is an integer larger than zero. Based on the characteristic of CZT that can select an arbitrary start frequency and frequency resolution (or stop frequency), the device and method provided by the invention can realize spectral zooming during frequency analysis by subjecting the sample signal to Z transform, thereby obtaining higher start frequency resolution, and reducing frequency measurement error caused by picket fence effect.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a wavelength label information analysis device and analysis method. Background technique [0002] With the development of Wavelength Division Multiplex (WDM for short) technology, the current optical communication network can simultaneously transmit tens to hundreds of wavelengths of optical signals in the same optical fiber, and based on reconfigurable optical division The Reconfigurable Optical Add-Drop Multiplexer (ROADM) technology facilitates the on-demand configuration of each wavelength in optical communication, so that each wavelength in the optical network does not need to maintain the same path between two sites, or a certain Wavelengths also don't need to be allocated forever to two sites. [0003] For wavelength label technology, please refer to Appendix D of China Post and Telecommunications Industry Standard YD / T 2003-2009 "Technical Requirements for Reconfigur...

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Application Information

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IPC IPC(8): H04J14/02H04B10/155
Inventor 尚迎春
Owner ZTE CORP
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