Multifunctional device for improving quality of optical signals

Abstract

The invention discloses a multifunctional device for improving the quality of optical signals. The multifunctional device comprises an online clock extraction unit, a light-operated optical switch unit, a wavelength conversion / shaping unit, an auxiliary optical signal unit, an optical splitter and an optical amplification unit, wherein in the online clock extraction unit, an amplified degraded optical signal is coupled into a high nonlinear fiber, and clock information in the degraded optical signal is transferred to a new wavelength, namely the wavelength corresponding to an optical clock signal, under the effect of the high nonlinear fiber; the optical signal output by the light-operated optical switch unit is still kept on the wavelength, and then input into the wavelength conversion / shaping unit via the optical amplification unit, and the optical wavelength at the moment is converted into the original input wavelength with the participation of an auxiliary optical signal.

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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