Wavelength and power monitoring device

Abstract

The invention relates to the field of power monitoring, in particular to a power monitoring device. The wavelength and power monitoring device comprises an optical signal input end, a primary filtering module, a secondary filtering module and a PD receiving end which are arranged in sequence; a multi-wavelength optical signal is input from the optical signal input end, coarse filtering in a largerange is carried out through the first-stage filtering module, fine filtering in a small range is carried out through the second-stage filtering module, and then the multi-wavelength optical signal isincident to the PD receiving end, so that optical signal wavelength monitoring and power monitoring are realized. According to the invention, the two-stage filtering module is adopted to carry out secondary filtering on optical signals of an optical system, especially an optical fiber communication system, such as an optical communication WDM system, so that the acquisition requirement of a PD receiving end is met, and the wavelength monitoring precision and stability are improved; furthermore, the problems that the wavelength monitoring accuracy is inaccurate and configurable channel wavelength monitoring and compensation cannot be carried out are avoided.

Description

technical field [0001] The invention relates to the field of wavelength and power monitoring, in particular to a wavelength and power monitoring device and a wavelength and power monitoring device based on an optical fiber communication system. Background technique [0002] The optical fiber communication system is a communication system that uses light as the carrier, uses ultra-fine optical fibers drawn from extremely high-purity glass as the transmission medium, and uses light to transmit information through photoelectric conversion. [0003] The optical fiber communication system has high bandwidth and low transmission loss, and is usually realized by using the WDM system. Through the wavelength division multiplexing (WDM) technology, it is possible to transmit multiple optical signals of different wavelengths in one optical fiber, and the transmission capacity of optical fiber communication multiply. Optical fiber communication has the advantages of large communication...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a wavelength and power monitoring device to solve the problem of inaccurate monitoring wavelength accuracy and inability to perform configurable channel wavelength monitoring and compensation for the above-mentioned defects of the prior art.

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