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Light freuqency controlling device for super-dense type wave-division multi-path multiplex optical channel

A wavelength division multiplexing, ultra-intensive technology, applied in the direction of wavelength division multiplexing systems, circuits, lasers, etc., can solve the problem of unusable

Inactive Publication Date: 2004-04-14
李在升 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is suitable for calibrating a small number of light sources, but it cannot be used when the number of optical channels and beat signals is huge

Method used

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  • Light freuqency controlling device for super-dense type wave-division multi-path multiplex optical channel
  • Light freuqency controlling device for super-dense type wave-division multi-path multiplex optical channel
  • Light freuqency controlling device for super-dense type wave-division multi-path multiplex optical channel

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Embodiment Construction

[0023] Reference will now be made in detail to preferred versions of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers have been used for like and like parts throughout the drawings.

[0024] In the present invention, a microwave beat frequency signal is used as a control signal to calibrate the center frequency of the ultra-dense wavelength division multiplexing optical channel. When calibrating ultra-dense WDM optical channels, where the gap between optical channels is very small and there are a large number of optical channels using the microwave beat signal, it will be very easy to find the light channel. Therefore, a microwave spectrum analysis circuit must be required but not tested.

[0025] In the present invention, a microwave spectrum analysis circuit is used to analyze the microwave beat frequency signal. The microwave spectrum analysis circuit helps to analyze the complex distributed micr...

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Abstract

Disclosed is an optical frequency controlling device for ultra-dense wavelength-division-multiplexed optical channels in which center frequencies of optical channels are aligned. An optical frequency controlling device for ultra-dense wavelength-division-multiplexed optical channels of the present invention comprises an optical channel unit for outputting a plurality of semiconductor laser beams which have different center frequencies, the semiconductor laser beams forming optical channels; an optical detection unit for performing optical detection on the plurality of semiconductor laser beams outputted from the optical channel unit and generating beat frequency signals; a microwave spectrum analyzing unit for outputting spectrum information of the beat frequency signals outputted from the optical detection unit in a digital signal; and a controller for receiving an output signal of the microwave spectrum analyzing unit and controlling the center frequencies of the optical channels of the optical channel unit.

Description

technical field [0001] The present invention relates to an optical frequency control device for an ultra-dense wavelength division multiplexing optical channel, in particular to an ultra-dense wavelength division multiplexing optical channel in which the central frequency of the optical channel is calibrated optical frequency control device. Background technique [0002] In order to improve the transmission capacity of a bundle of optical fibers, the gap between the optical channels of the wavelength division multiplexing optical system has been reduced from 100GHz to 50GHz, 25GHz or lower. There are no obvious criteria for the classification of ultra-dense optical communication, but if the gap between optical channels is always 25 GHz or less and the number of optical channels is 100 or more, then such communication belongs to ultra-dense wavelength division multiplexing Communication with light. In a two-way optical communication system, the difference between the center...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/12H04B10/155
CPCH04B10/506H04B10/572H04B10/2581H04B10/25
Inventor 李在升徐璟嬉
Owner 李在升