A Multi-Functional Device for Improving the Quality of Optical Signals

Abstract

The invention discloses a multifunctional device for improving the quality of optical signals, which includes an online clock extraction unit, an optically controlled optical switch unit, a wavelength conversion / shaping unit, an auxiliary optical signal unit, an optical splitter and an optical amplification unit; in the online clock extraction unit , the amplified degraded optical signal is coupled into the highly nonlinear optical fiber, and the clock information in the degraded optical signal is transferred to a new wavelength after the action of the highly nonlinear optical fiber, that is, the wavelength corresponding to the optical clock signal; the optical control optical switch unit The output optical signal remains at this wavelength, and then is input to the wavelength conversion / shaping unit through the optical amplification unit. With the participation of the auxiliary optical signal, the optical wavelength at this time is converted to the original input wavelength.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and more specifically relates to a multifunctional device for improving the quality of optical signals. Background technique [0002] With the continuous improvement of the transmission bandwidth and transmission distance requirements of optical fiber communication systems, the signal processing technology in optical fibers has increasingly become a bottleneck restricting the development of the optical communication industry. Signal degradation in optical communication includes the following types: pulse broadening caused by dispersion in optical fibers and optical devices, ASE noise accumulation of optical amplifiers used to compensate transmission loss, pulse envelope distortion caused by nonlinear effects in optical fibers, Interference between channels, etc. The simple ones can be summarized as: intensity noise, timing jitter, and pulse envelope distortion. The superposition o...

AI Technical Summary

Problems solved by technology

However, the current problem is that only one or two of the degradation factors can be solved by taking corresponding measures, and it cannot comprehensively solve all signal degradation problems.

Another problem that is often faced is that in some all-optical signal processing technologies that can improve signal quality, wavelength conversion will inevitably occur, that is, the wavelength of the output optical signal is different from the input wavelength, which is not correct in some applications. hopefully

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