Phase modulation signal full-optical wavelength conversion device

An all-optical wavelength conversion and phase modulation signal technology, applied in optics, nonlinear optics, wavelength division multiplexing systems, etc., can solve problems such as inability to suppress harmonics and complex overall functions

Active Publication Date: 2014-02-19
GUANGXUN SCI & TECH WUHAN
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Problems solved by technology

The device is slightly complicated in terms of overall function realization, and requires precise delay control, and the device cannot suppress harmonics to improve signal quality

Method used

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  • Phase modulation signal full-optical wavelength conversion device
  • Phase modulation signal full-optical wavelength conversion device
  • Phase modulation signal full-optical wavelength conversion device

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific examples.

[0032] The present invention is an all-optical wavelength conversion device for phase modulation signals, such as figure 1 As shown, it includes tunable dispersion compensator 2, erbium-doped fiber amplifier 3, tunable optical attenuator 4, tunable laser 5, polarization controller 6, optical beam splitter 7, first optical coupler 8, high-frequency Linear optical fiber 9, optical filter 10, signal demodulation and monitoring device 13; adjustable color tone compensator 2, erbium-doped fiber amplifier 3, adjustable optical attenuator 4 are connected in sequence, and the output port of adjustable laser 5 is connected to the polarization The input port of the controller 6 is connected, the output port of the polarization controller 6 is connected with the combined light port of the optical beam splitter 7, and a splitting port of the optical beam spli...

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Abstract

The invention discloses a phase modulation signal full-optical wavelength conversion device. The phase modulation signal full-optical wavelength conversion device comprises a tunable dispersion compensator, an erbium-doped optical fiber amplifier, a variable optical attenuator, a tunable laser, a polarization controller, an optical beam splitter, a first optical coupler, a high-nonlinearity optical fiber, an optical filter and a signal demodulating and monitoring device. An output port of the tunable laser with the narrow linewidth is connected with an input port of the polarization controller. An output port of the polarization controller is connected with an optical integration port of the optical beam splitter. One optical splitting port of the optical beam splitter and an output port of the variable optical attenuator are connected with two optical splitting ports of the first optical coupler respectively. The first optical coupler, the high-nonlinearity optical fiber and the optical filter are sequentially connected. An output port of the optical filter and the other optical splitting port of the optical beam splitter are connected with a signal input port of the signal demodulating and monitoring device and a local oscillator input port of the signal demodulating and monitoring device respectively. Through the utilization of the phase modulation signal full-optical wavelength conversion device, harmonic suppression can be achieved, and signal quality is improved.

Description

technical field [0001] The invention relates to a wavelength conversion device, in particular to an all-optical wavelength conversion device for a phase modulation signal, and belongs to the technical fields of coherent optical communication and all-optical signal processing. Background technique [0002] The all-optical wavelength converter can completely copy the information carried by one optical wavelength to another optical wavelength, and is a key device for future-oriented dense wavelength division multiplexing all-optical networks characterized by wavelength routing. Most of the current all-optical wavelength converters are based on the intensity modulation direct detection system, which can complete the wavelength conversion of the intensity modulation signal. However, compared with the intensity modulation direct detection system, the coherent optical communication system has high receiving sensitivity and long relay distance; it can be used Modulation pattern with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/365H04J14/02
Inventor 于刚陈征陈强江雄马卫东
Owner GUANGXUN SCI & TECH WUHAN
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