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Device and method for realizing auto-control gain of on-line fibre-optical Raman amplifier

A gain automatic control, Raman amplifier technology, applied in nonlinear optics, optics, instruments, etc., can solve the problems of uncertain multiple feedbacks, complex feedback control devices, and inability to determine the tolerance in advance, and save equipment. Cost, simplifying the control device, improving the effect of control accuracy and efficiency

Inactive Publication Date: 2007-03-14
ZTE CORP
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Problems solved by technology

[0013] The present invention overcomes the technical problem that the feedback control device in the prior art is complicated, and the target realization needs uncertain multiple feedbacks; aiming at the shortcoming that the allowable degree in different situations cannot be determined in advance, it realizes automatic online control of optical fiber Raman amplifier gain

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  • Device and method for realizing auto-control gain of on-line fibre-optical Raman amplifier
  • Device and method for realizing auto-control gain of on-line fibre-optical Raman amplifier
  • Device and method for realizing auto-control gain of on-line fibre-optical Raman amplifier

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Embodiment Construction

[0070] The on-line automatic control fiber Raman amplifier gain device of the present invention consists of the following parts:

[0071] Optical performance monitoring module 1: The optical performance monitoring module 1 is arranged at the input end of the optical fiber for providing optical gain, and measures the power and wavelength of the input optical signal. The monitoring data obtained by the optical performance monitoring module 1 is reported to the central processing module;

[0072] Central processing module: the central processing module receives the target gain set by the user in advance or at any time, including but not limited to gain flat, gain tilt or arbitrary gain spectrum. According to the power and wavelength of each channel reported by the optical performance monitoring module 1, as well as the performance parameters of the optical fiber stored in the system, the wavelength of each pump laser of the optical fiber Raman amplifier, their driving current or ...

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Abstract

The invention discloses an equipment and method which is used to achieve automatic gain control of on line optical fiber Laman amplifier in optic transmission system, especially relates to an automatic gain control equipment and method in dense wavelength division multiplexing optic transmission system, when there are several pumping laser equipments at forward, backward or bidirection in optical fiber Laman amplifier. The invention monitors wavelength and power of optical fiber input end to calculate needed driving voltage and current of each pumping laser equipment of optical fiber Laman amplifier, and achieves to objective gain. Based on the signal changing of optical fiber input end, the system can control optical fiber Laman amplifier gain to hold the line or to achieve objective changing on line automatically. The invention gets the progress of simplifying control equipment, and achieves the effect of controlling gain of Laman amplifier on line automatically, saves equipment cost, and improves control precision and efficiency.

Description

technical field [0001] The invention relates to a device and method for automatically controlling the gain of an online optical fiber Raman amplifier in an optical transmission system, in particular to a device and method for controlling the forward, backward or bidirectional A fiber Raman amplifier for multiple pump lasers, a device and method for realizing automatic gain control. The invention can realize the online automatic control and adjustment of arbitrary gain requirements such as gain flatness in various types of optical fibers such as transmission or dispersion compensation optical fibers. Background technique [0002] The optical fiber Raman amplifier uses the nonlinear optical effect of the optical fiber itself - stimulated Raman scattering (SRS), to directly amplify the optical signal. Silica fiber has a wide stimulated Raman scattering gain spectrum and a broad gain peak around 13THz, so the working band of the fiber Raman amplifier depends on the wavelength o...

Claims

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Application Information

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IPC IPC(8): G02F1/39H04B10/17H01S3/30H04B10/293H04J14/02
Inventor 王国忠施社平武成宾罗来荣古渊
Owner ZTE CORP
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