Wavelength-tunable multi-wavelength laser production system and method

Abstract

The invention discloses a wavelength-tunable multi-wavelength laser production system. The system comprises a tunable DC laser production unit and a multi-wavelength laser production unit; the tunableDC laser production unit comprises a DC laser, a first electro-optical modulator, a first radio frequency signal source, a first work point control unit and a first optical filter; the multi-wavelength laser production unit comprises an optical coupler, a second electro-optical modulator, a second radio frequency signal source, a second work point control unit, a second optical filter, an opticalamplifier and an optical isolator. The multi-wavelength laser production system has the characteristic that the initial wavelength and the beam interval are flexible and continuously tunable. The problem that the conventional cascaded modulator is large in multi-wavelength amplitude difference, complex in control logic and high in signal insertion loss is solved through cyclic frequency shift andinner-ring gain compensation, and the system has application values in the wavelength multiplexing optical communication, optical channel technology, and microwave photon radar technology and like fields.

Description

technical field [0001] The invention relates to the technical field of microwave photon signal generation and processing, in particular to a wavelength-tunable multi-wavelength laser generation system and method. Background technique [0002] The emergence of wavelength division multiplexing technology has greatly improved the signal transmission capability of optical communication systems, and is one of the most widely used optical communication technologies. In addition, in terms of broadband radio frequency signal processing, in recent years, photonics processing methods have emerged to replace conventional radio frequency processing methods, such as optical channelization processing technology. In the above two application fields, the multi-wavelength laser generating device is an indispensable functional unit. [0003] Conventional multi-wavelength laser generators are often combined with multiple single-wavelength DC lasers, and each laser outputs a different waveleng...

AI Technical Summary

Problems solved by technology

The disadvantage is that limited by the nonlinear effect of the optical modulator, the number of multi-wavelength lasers that can be generated is often small; and if more modulators are cascaded to increase the number of laser wavelengths, on the one hand, the cost will increase significantly , on the other hand, it will bring serious insertion loss to the optical signal

More importantly, the multi-wavelength laser generated by this method has large amplitude fluctuations, poor stability, complex operating point control logic of the modulator, and high synchronization control requirements for the RF drive signals of different modulators, so its practical Sexual existence must be insufficient

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